# ABCD is an isosceles trapezoid. mAngle SymbolABC= 3x+10 and mAngle SymbolBAD=4x-5. Solve for x

26,556 questions
1. ## geometry

ABCD is an isosceles trapezoid. mAngle SymbolABC= 3x+10 and mAngle SymbolBAD=4x-5. Solve for x.

asked by benajmin on May 12, 2011
2. ## Check my work plz?

2. If mangle sign1 = 53°, what is mangle sign4? 53° 43° 37° 27° 3. If mangle sign1 = 50°, what is mangle sign5? 50° 40° 35° 25° 5. If mangle sign4 = 75°, then what is mangle sign8? 105° 75° 175° 25° 11. Name the triangles that are classified

asked by Anonymous on February 14, 2014
3. ## Math

2. If mangle sign1=37°, what is mangle sign4? 53° 43° 37° 27° If mangle sign1 = 55°, what is mangle sign5? 55° 40° 35° 25°

asked by anonymous on March 2, 2014
4. ## Math cca

1. Name a pair of vertical angles. angle sign2 and angle sign5 angle sign2 and angle sign6 angle sign3 and angle sign4 angle sign5 and angle sign6 2. If mangle sign1 = 43°, what is mangle sign4? 53° 43° 37° 27° 3. If mangle sign1 = 55°, what is

asked by Anonymous on February 16, 2014
5. ## Geometry

"Given quadrilateral ABCD with A(0,0) B(4,2) C(3,3) and D(1,2), prove that ABCD is a non-isosceles trapezoid" I don't understand how to put this as a proof, since I have to include formulas and reasons. Wouldn't a non-isosceles trapezoid be a normal

asked by Meema on January 4, 2016
6. ## Math

Use the figure to answer the following questions. figure for questions 1–3 1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle

7. ## MATH

Use the figure to answer the following questions. figure for questions 1–3 1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle

asked by Anonymous on February 15, 2013
8. ## Math

Use the figure to answer the following questions. figure for questions 1–3 1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle

asked by Joe on March 8, 2015
9. ## pre-algebra

Use the figure to answer the following questions. figure for questions 1–3 1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle

asked by cupcakesss on February 26, 2016
10. ## Math

Given a trapezoid ABCD with AD parallel to BC. The diagonals AC and BD are congruent. Prove that ABCD is an isosceles trapezoid.

asked by Yuki on November 18, 2012
11. ## Math

Given a trapezoid ABCD with AD parallel to BC. The diagonals AC and BD are congruent. Prove that ABCD is an isosceles trapezoid.

asked by Yuki on November 18, 2012
12. ## geometry

Solve for x, given that ABCD is an isosceles trapezoid, AC = 2x + 12, and BD = 4x - 30.

asked by Octaisha on January 16, 2012
13. ## geometry

Given Isosceles trapezoid ABCD. AB = 3x - 4 and CD = x + 12. Find AB. Isosceles trapezoid A B C D is drawn. 2 8 16 20

asked by cc on December 15, 2010
14. ## Geometry

Quadrilateral ABCD is a parallelogram. If adjacent angles are congruent, which statement must be true? A. Quadrilateral ABCD is a square. B. Quadrilateral ABCD is a rhombus. C. Quadrilateral ABCD is a rectangle. D. Quadrilateral ABCD is an isosceles

asked by Lauren on July 5, 2017
15. ## math

1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 .. angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle sign1 = 37°, what is the measure of angle sign4? (1 point) 53° 43° 37° ..

asked by ollie on April 15, 2015
16. ## Geometry

I have four questions: 1. The area of trapezoid ABCD is 60. One base is 4 units longer than the other, and the height of the trapezoid is 5. Find the length of the median of the trapezoid. 2. In trapezoid ABCD, line BC is parallel to line AD, angle ABD =

asked by jared on December 6, 2014
17. ## Math

ABCD is an isosceles trapezoid with AB as its longest side and O divides the diagonals AC and BD in the ratio of 1:2. What is the area of ABCD if the area of BOC is 2 square meter?

asked by Jszca on January 10, 2016
18. ## Math

Trapezoid ABCD is congruent to trapezoid EFGH. Which statement is true? Trapezoid ABCD and trapezoid EFGH are shown. Trapezoid ABCD is shown with side AB measuring 15 cm, side CD measuring 9 centimeters, and the height of trapezoid ABCD measuring 3

19. ## English

Word box adhere affirm atrocity audition cope deter disquieting empower fluent lag mangle misapprehension optimist prowl stupefy sulky supplement surge trait unscrupulous 1.He is so careless in handling his textbooks that by the end of the term he has

asked by Jerald on April 1, 2013
20. ## MATH

In isosceles trapezoid ABCD, AB=22, CD=34 and AC=10. Find BD A)28 B)5 C)10 D)35

asked by Tiffany on July 13, 2010
21. ## Geometry

Abcd is an isosceles trapezoid with a(10,-1) b(8,3) and c(-1,3). Find the coordinates of d

asked by Alice on March 22, 2013
22. ## geometry

Isosceles trapezoid ABCD has legs AB and CD and base BC If AB = 7y – 4, BC = 4y – 6, and CD = 8y – 18, find the value of y.

asked by Ryan on November 25, 2011
23. ## Math

The bases of trapezoid ABCD are AB and CD. Let P be the intersection of diagonals AC and BD. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD. I'm so confused... please help! I was thinking that if I

asked by Geometry HELP on November 29, 2015
24. ## geometry

ABCD is an isosceles trapezoid with a height of 4 inches and bases of 10 and 12 inches .What is the perimeter of this trapezoid in inches and feet . HINT:Only the bottom of the entire figure is 16 inches long, not the top

asked by Veronica on June 7, 2011
25. ## Geometry

ABCD is a trapezoid. If AC is equal to 8x - 3 and BD is equal to 2x + 9, find the value of x so that ABCD is isosceles.

asked by Anonymous on September 4, 2011
26. ## Math

The bases of trapezoid ABCD are AB and CD. Let P be the intersection of diagonals AC and BD. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD.

asked by ASDF on November 23, 2013
27. ## geometry

the bases of isosceles trapeziod abcd are 17 and 25cm and its base angles are 45 degrees. find the height of the trapezoid

asked by lakyn on September 13, 2011

A circle with radius 3 is inscribed in a isosceles trapezoid with legs of 10. Find the length of the smaller base. When I draw a diagram, calling the trapezoid ABCD with A and D at the bottom, I see that the length from where the altitude from B and C hits

asked by Knights on February 18, 2013
29. ## Geometry

ABCD is an isosceles trapezoid. Angle CDA = 80. Find the measure of angle BAD.

30. ## GEOmetry!!.....

ABCD is a trapezoid with AB

asked by i need help from anyone! on March 25, 2013
31. ## math

An isosceles trapezoid ABCD has bases AD = 17 cm, BC = 5cm, and leg AB = 10cm. A line is drawn through vertex B so that it bisects diagonal AC and intersects AD at point M. Find the area of ΔBDM.

asked by Diya on April 14, 2018

The bases of trapezoid $ABCD$ are $\overline{AB}$ and $\overline{CD}$. Let $M$ be the midpoint of $\overline{AD}$. If the areas of triangles $ABM$ and $CDM$ are 5 and 17, respectively, then find the area of trapezoid $ABCD$.

asked by laura on August 9, 2015
33. ## math, geometry

The bases of trapezoid ABCD are \overline{AB} and \overline{CD}. Let P be the intersection of diagonals \overline{AC} and \overline{BD}. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD.

asked by Anonymous on April 27, 2014
34. ## MATH_URGENT

The bases of trapezoid ABCD are \overline{AB} and \overline{CD}. Let P be the intersection of diagonals \overline{AC} and \overline{BD}. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD.

asked by RhUaNg on April 27, 2014
35. ## math

The bases of trapezoid ABCD are \overline{AB} and \overline{CD}. Let P be the intersection of diagonals \overline{AC} and \overline{BD}. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD.

asked by Robert on December 8, 2013
36. ## math

prove the following: given: ABCD is a trapezoid with bases BC and AD to prove: BX • AX = DX • CX X is the intersection of the segment going from BD and AC i need the answer in a two column proof statements Reasons 1. ABCD is a trapezoid with 1. given

asked by bob on April 28, 2010
37. ## Geometry

The measure of the consecutive sides of an isosceles trapezoid are in the ratio 8:5:2:5 the perimeter of the trapezoid is 140 inches if it's height is 20 inches find the area of the trapezoid

asked by Anonymous on April 22, 2015
38. ## Math: Geometry

isosceles trapezoid ABCD is shown below with a line ef drawn through its center. Of the isosceles trapezoid is dilated using a scale factor of 1/2 and a line is drawn through the center of the new dilated figure, what relationship will that line have with

asked by Blah on December 8, 2015
39. ## math

EF is a median of isosceles trapezoid ABCD. Find EF if AB is equal to 3 inches, and CD is equal to 11 inches.

asked by sylvia on May 25, 2010
40. ## Geometry

ABCD is a trapezoid with AB < CD and AB parallel to CD. \Gamma is a circle inscribed in ABCD, such that \Gamma is tangent to all four sides. If AD = BC = 25 and the area of ABCD is 600, what is the radius of \Gamma?

asked by Jason on March 27, 2013
41. ## fd

a trapezoid abcd has parallel sides ab and dc of lengths 8 and 22. If both diagonals AC and BD are of length 17, what is the area of the trapezoid

asked by Anonymous on October 3, 2012
42. ## English

7.Me definition of a(n) (optimist misapprehension) is someone who looks at an almost empty bottle and says, "This bottle is one quarter full." optimist 8.The worst way to deal with disappointments is to become (fluent sulky) the best way is to smile and

asked by Jerald on April 1, 2013
43. ## geometry

Trapezoid ABCD has height 4, BC=5, and AD and BC are perpendicular. Find the area of the trapezoid.

asked by sally on February 13, 2011
44. ## geometry

Trapezoid ABCD has height 4, BC=5, and AD and BC are perpendicular. Find the area of the trapezoid.

asked by sally on February 13, 2011
45. ## Math

the diagonals of an isosceles trapezoid are each 17,the altitude is 8,and the upper base is 9.Find the perimrter of the trapezoid.

asked by JEFF BOMB on January 5, 2010
46. ## geometry

An isosceles trapezoid has base angles equal to 45 and bases of lengths 6 and 12. Find the area of the trapezoid.

asked by john on March 8, 2011
47. ## geometry.

In the diagram, a trapezoid is shown with x=36 and y=56. Find the area of the trapezoid. It's an isosceles triangle with base angles of 60°.

asked by taylor. on March 7, 2013
48. ## Geometry

1. What is the base and the height of the rectangle if the area is 216 and the perimeter is 66? 2.The perimeter of an isosceles trapezoid is 40 ft. Thr bases of the trapezoid are 11ft and 19 ft. Find the area of the trapezoid.

asked by Anonymous on April 28, 2012
49. ## geometry

The equal sides of an isosceles trapezoid each measure 5, and its altitude measures 4. If the area of the trapezoid is 48, find the lengths of its bases.

asked by Tracy on March 19, 2011
50. ## math

In any triangle the sum of the measures of the angles is 180. In triangle ABC, A is three times as large as B and also 16 larger than C. Find the measures of each angle. I also would like to know how to solve these problems: In isosceles trapezoid ABCD,

asked by Faye on October 4, 2008
51. ## geomatry

Given: Isosceles trapezoid CPRQ with base R CXQ Prove: QCX is isosceles it needs to be a two column proof

asked by ashlee on August 19, 2008
52. ## geometry

the equal sides of an isosceles trapezoid eah measure 5, and its altitude measures 4. if the area of the trapezoid is 48, find the lengths of its bases.

asked by kiiah roberts on November 29, 2010
53. ## Geometry Question (multiple choice)!

The isosceles trapezoid is part of an isosceles triangle with a 34° vertex angle. What is the measure of an acute base angle of the trapezoid? Of an obtuse angle? 73°; 107° 34°; 146° 73°; 146° 34°; 107° Thank you =) :) ;)

asked by Claire on January 10, 2012
54. ## math

Trapezoid ABCD, top and bottom are parallel. Left is 45, bottom is 60, right is 30, top is unknown. Trapezoid EFGH is similar to ABCD, top and bottom are parallel. Top is 10, other sides are unknown. Area of ABCD is 9 times larger than EFGH. What is the

asked by olav on December 11, 2010
55. ## Geometry

Isosceles triangle ABE of area 100 square inches is cut by CD into an isosceles trapezoid and a smaller isosceles triangle. The area of the trapezoid is 75 square inches. If the altitude of triangle ABE from A is 20 inches, what is the number of inches in

asked by Curtis on July 9, 2017
56. ## geometry

ABCD is a trapezoid with AB parallel to DC. If AB=25, BC=24, CD=50 and AD=7, what is the area of ABCD?

asked by Anonymous on March 12, 2013
57. ## maths

ABCD is a trapezoid with AB parallel to DC. If AB = 25, BC = 24, CD = 50 and AD = 7, what is the area of ABCD?

asked by abc9837 on March 16, 2013
58. ## Maths

Isosceles triangle $ABE$ of area 100 square inches is cut by $\overline{CD}$ into an isosceles trapezoid and a smaller isosceles triangle. The area of the trapezoid is 75 square inches. If the altitude of triangle $ABE$ from $A$ is 20 inches, what is the

asked by Anonymous on February 15, 2018

The base of a right prism is isosceles trapezoid with legs c=d = 5 cm, bases a=8 cm and b=14 cm, and altitude of the trapezoid k=4 cm. The height of the prism h=10 cm. Find: Lateral area

asked by Katniss Everdeen on April 23, 2017
60. ## Geometry

What is the reason called when there are two legs on an isosceles triangle, are bisected using a mid segment to form a trapezoid, and you are trying to prove the legs of the trapezoid are congruent?

asked by Kathleen on January 14, 2014
61. ## Geometry

Figure ABCD is a trapezoid with DC = (1/3) AB. What is the ratio of area ABCD to area DCE? Provide an argument to support your answer. Could it be 1:3 ? Can you please explain?

asked by purple on May 16, 2010
62. ## maths

ABCD is a trapezoid with parallel sides AB and CD. Γ is an inscribed circle of ABCD, and tangential to sides AB,BC,CD and AD at the points E,F,G and H respectively. If AE=2,BE=3, and the radius of Γ is 12, what is the length of CD?

asked by ashu on August 21, 2013
63. ## geometry

In an isosceles trapezoid, the longest base is 11", a leg is 5", and the height is 4". Find the length of the shorter base of the trapezoid.

asked by gayle on November 29, 2010
64. ## geometry

An isosceles trapezoid with that bases 16 in and 34 in are inscribed in a circle such that one of the bases is the diameter. Find the area of the trapezoid.

asked by Michaela on June 13, 2011
65. ## geometry

6. The isosceles trapezoid is part of an isosceles triangle with a 34° vertex angle. What is the measure of an acute base angle of the trapezoid? Of an obtuse base angle? The diagram is not drawn to scale. (1 point)73o; 107o 34o; 146o 73o; 146o 34o; 107o

asked by linda on February 13, 2013
66. ## MATH

In an isosceles trapezoid the length of a diagonal is 25 cm and the length of an altitude is 15 cm. Find the area of the trapezoid.

asked by none on March 15, 2017
67. ## geometry

in an isosceles trapezoid, ABCD, AD congruent BC. diagonal AC bisects angle DAB. if the measure of angle CAB = 15, find: the measure of angle b, measure of angle BCA, measure of ACD, and the measure of angle D

asked by kyle on May 3, 2016

Trapezoid ABCD, top AD and bottom BC are parallel. AD is the smaller of the two parallel lines. Left AB is 45, bottom BC is 60, right CD is 30, top AD is unknown. Trapezoid EFGH is similar to ABCD, top EH and bottom FG are parallel. EH is the smaller of

asked by olav on December 12, 2010
69. ## Math

The bases of trapezoid $ABCD$ are $\overline{AB}$ and $\overline{CD}$. We are given that $CD = 8$, $AD = BC = 7$, and $BD = 9$. Find the area of the trapezoid.

asked by justarandomboy on April 22, 2016

The bases of trapezoid $ABCD$ are $\overline{AB}$ and $\overline{CD}$. We are given that $CD = 8$, $AD = BC = 7$, and $BD = 9$. Find the area of the trapezoid.

asked by Sarah on April 23, 2016
71. ## geometry

The bases of trapezoid $ABCD$ are $\overline{AB}$ and $\overline{CD}$. We are given that $CD = 8$, $AD = BC = 7$, and $BD = 9$. Find the area of the trapezoid.

asked by ana on July 21, 2017
72. ## Geometry

I have to do this web quest table and i just want to make sure that i did this right. please help check this for me! I did this in excel so i marked the questions with my answers with different symbols. it is a little confusing. Probability of 2 randomly

asked by Cheryl on February 2, 2011
73. ## calculus

a trapezoid is a quadrilateral with (only) two sides (called bases) that are parallel. an isosceles trapezoid has two equal legs. the area of a trapezoid is A=(1/2)*h*(b1+b2) where b1 and b2 are the two parallel bases and h is the altitude. your problem: a

asked by robert on November 17, 2011
74. ## math

In a square ABCD, point P is chosen inside ABCD and point Q outside ABCD such that APB and BQC are congruent isosceles triangles with angle APB = angle BQC = 80 degrees. T is a point where BC and PQ meet. Find the size of angle BTQ

asked by Lola on August 28, 2018
75. ## Geometry

An isosceles trapezoid has bases of length 20 and 12 centimeters and legs of length 11 centimeters what is the area of the trapezoid to the nearest tenth

asked by Julieta on February 23, 2013
76. ## Geometry

An isosceles trapezoid has bases of length 20 and 12 centimeters and legs of length 11 centimeters what is the area of the trapezoid to the nearest tenth

asked by Julieta on February 23, 2013
77. ## geometry

I'm having trouble coming up with a proof regarding isoceles trapezoids. The given information is that the diagonals of trapezoid ABCD are congruent so segment AC is congruent to segment DB. Can anyone explain the steps of proving the legs of the trapezoid

asked by Anonymous on December 21, 2011
78. ## Help me

11. Name the triangles that are classified by angles. right, scalene, isosceles scalene, isosceles, equilateral acute, right, obtuse obtuse, isosceles, acute 12. Classify the triangle by side length and angle measurement. scalene, acute isosceles, acute

asked by Jman on January 31, 2013
79. ## Math

Rose's garden is in the shape of a trapezoid. If the height of the trapezoid is 16m, one base is 20m and the area is 224m2, what is the length of the other base? The area of a trapezoid is: A= (1/2) h (b1 + b2) ...where h = height and b1, b2 are the bases.

asked by Tony on March 23, 2007
80. ## geometry

An isosceles trapezoid has bases length 19 and 11 centimeters and length 13 centimeters. What is the area of the trapezoid to the nearest tenth?

asked by Ana on December 13, 2011
81. ## calculus

A water-trough is 10m long and has a cross-section which is the shape of an isosceles trapezoid that is 30cm wide at the bottom, 80cm wide at the top, and has height 50cm. If the trough is being fi lled with water at the rate of 0.2 m3/min, how fast is the

asked by asdf on December 1, 2012
82. ## Geometry

Angle A and Angle B are complementary andgles and the m Angle A = 58 degrees, what is he measure of the supplement of Angle B. This is what I did Angle A and Angle B = 90 degrees, mAngle A = 58 degrees 90 - 58 = 32 degrees 180 - 32 = 148 M angle B

asked by Monique on February 6, 2012
83. ## Geometry

LM is the midsegment of trapezoid ABCD. If AB = 46 and DC = 125, what is LM?

asked by BaileyBubble on December 14, 2012
84. ## Geometry

In the diagram, EF is the median of trapezoid ABCD. If AB = 5x - 9, DC = x + 3, and EF = 2x + 2, what is the value of x?

asked by Sarah on May 6, 2019
85. ## Geometry (again)

How can one prove a right isosceles triangle? Or a right trapezoid?

asked by Meema on January 4, 2016
86. ## Math

How many lines of symmetry could an isosceles trapezoid have?

asked by Hehe😂 on February 21, 2019
87. ## geometry

ABCD is a trapezoid with median EF and bases AB and CD. AB = 18, EF = 28. Find CD

asked by matt on May 29, 2012
88. ## Geometry

Find the area of a trapezoid ABCD with verticles A(2,2) B(4,6) C(4,-3) and D(2,-1)

asked by mary on April 10, 2011
89. ## geometry

Find the length of the diagonals of the isosceles trapezoid if AC = x + 1 and DB = 2x - 3

asked by sharon on January 15, 2012
90. ## math

how can you find the length of a line of a isosceles trapezoid?

asked by frank on April 10, 2009
91. ## geometry

DEFG is an isosceles trapezoid. Find the measure of

asked by Marcus on October 20, 2011
92. ## math

The cross section of an attic is in the shape of an isosceles trapezoid. If the height of the attic is 9 feet, BC=12 feet, and AD=28 feet, find the length of line AB to the nearest foot. The triangle of the trapezoid is triangle ABE and the bases are BC

asked by anthony on April 11, 2009
93. ## Math

We have a trapezoid ABCD and the diagonals intersect in point O. AO : OC = m : n Prove that DO : OB = m : n

asked by Mike on November 30, 2017
94. ## Math

We have a trapezoid ABCD and the diagonals intersect in point O. AO : OC = m : n Prove that DO : OB = m : n

asked by Mike on November 29, 2017

9. Name the triangles that are classified by angles. (1 point) right, scalene, isosceles scalene, isosceles, equilateral acute, right, obtuse obtuse, isosceles, acute 11. Name the quadrilaterals that have four equal sides. (1 point) rhombus, square square,

asked by Delilah on February 13, 2013
96. ## math neeeeed help plez help

trapezoid ABCD is congruent to trapezoid EFGH. Which statement is true. A- B= 15cm D-C 9cm A. side EF is 15cm B. side GH is 9cm C. side EF is 9cm D. the height of trapezoid EFGH is 9cm

asked by Abby on February 27, 2017
97. ## geometry

ABCD it's an isosceles trapazoid With A(10,-1),B(8,3), and C(-1,3).find the coordinates of D

asked by kenzie on May 31, 2015
98. ## Math

If you solve this you are officially amazing! "The diagonals of a trapezoid are perpendicular and have lengths 8 and 10. Find the length of the median of the trapezoid."

asked by Sheenybeany on May 19, 2014