# Which of the following cannot be the lengths of a 30°-60°-90° triangle? A: 10/3, 20/3, 10/3 √3 B: 3, 3/2, 3√3 C: 11, 22, 11√3 D: 5/2, 5, 5/2 √3 I believe the answer is B, but I'm not sure

9,311 results
1. ## math

A triangle is rotated 35 degrees about the origin. What is true about the relationship between the image and the pre-image? A) The lengths of the sides and the measures of angles are preserved, so the triangles are congruent.

2. ## algebra

The lengths of the sides of a triangle are in ratio 2:4:5. The perimeter of the triangle is 44 cm. Find the lengths of the sides.

3. ## Geometry

Which three lengths cannot be the lengths of the sides of a triangle? A)25 m, 16 m, 10 m B)15 m, 13 m, 12 m C)18 m, 5 m, 10 m D)8 m, 8 m, 15 m

4. ## geometry

Two sides of a triangle have lengths 8 and 17. Which inequalities represent the possible lengths for the third side, x? a) 9 < x < 25 b) 9 < x < 17 c) 9 < x < 8 d) 8 < x < 17

5. ## Calculus

the legs of a right triangle have lengths a and b satisfying a + b =10. which values of a and b maximize the area of the triangle?

6. ## Math, Ms. Sue Help asap plss

Can the numbers 24, 32, and 40 be the lengths of three sides of a triangle? Why or why not My answer: Yes it can. Because the 3 lengths satisfy the triangle inequality theorem. The triangle inequality theorem states that the third side of a triangle must

6. Which three lengths CANNOT be the lengths of the sides of a triangle? A.25 m, 16 m, 10 m B. 15 m, 13 m, 12 m C. 18 m, 5 m, 10 m D. 8 m, 8 m, 15 I think its A And if I'm wrong please explain the answer

8. ## Math

Question: Can the numbers 24, 32, 40 be the lengths of the three sides of a right triangle? Please explain why or why not? My answer: Yes, the numbers 24, 32, 40 can be the lengths of a three-sided right triangle because of the Pythagorean theorem (a^2 +

9. ## geometry

If a triangle has sides of lengths a and b, which make a C-degree angle, then the length of the side opposite C is c, where c2 = a2 + b2 − 2ab cosC. This is the SAS version of the Law of Cosines. Explain the terminology. Derive an equivalent SSS version

10. ## IRSC

the sum of the lengths of any two sides of a triangle must be greater than the third side. If a triangle has one side that 17 inches and a second side that is 1 inch less than twice the thrid side, what are the possible lengths for the second and third

11. ## Geometry

Please check my answers 1. A triangle has side lengths of 34 in, 20 in, and 47 in. Is the triangle acute, obtuse or right? a. Right b. Obtuse* c. Acute 2. Quilt squares are cut on the diagonal to form triangular quilt pieces. The hypotenuse of the

12. ## math

an isosceles triangle has perimeter of 15m. Find all integral possibilities for the lengths of the side in meters. Hint: the sum of the lengths of any two sides of a triangle must exceed the third side.

13. ## math help

Which represents a reduction? A (x,y) —> (0.9x, 0.9y) B (x,y) —> (1.4x, 1.4y) C (x,y) —> (0.7x, 0.3y) D (x,y) —> (2.5x, 2.5y) 11 Which set of lengths are not the side lengths of a right triangle? A 28, 45, 53 B 13, 84, 85 C 36, 77, 85 D 16, 61, 65

14. ## Math

Which set of side lengths shows similar triangles? Triangle ABC : 40, 20, 50; Triangle XYZ: 10, 12.5, 10 Triangle ABC : 30, 20, 30; Triangle XYZ: 40, 30, 20 Triangle ABC : 110, 80, 60; Triangle XYZ: 12, 16, 22 Triangle ABC : 32, 20, 32; Triangle XYZ: 40,

15. ## Math

An isosceles triangle has a perimeter of 15 m. Find all the integral possibilities for the lengths of the sides in meters. Hint the sum of the lengths of any two sides of a triangle must exceed the third side.

16. ## Math

One triangle has side lengths 3,5, and 6. A similar triangle has side lengths 18, 15 and 9. Which of the following ratios is the scale factor of the triangles? A 1/6 B 1/3 C 1/5 D 2/3 The answer is given as B, but I don't understand why or how to get that.

17. ## HELP!!!!RIGHT NOW!!!!

Which set of side lengths shows similar triangles? (1 points) A) Triangle ABC : 40, 20, 50; Triangle XYZ: 10, 4, 8 B) Triangle ABC : 30, 20, 60; Triangle XYZ: 40, 60, 90 C) Triangle ABC : 110, 80, 60; Triangle XYZ: 6, 8, 5.5 D) Triangle ABC : 32, 20, 32;

18. ## algebra

The base of an isosceles triangle and one of its legs have lengths that have consecutive integers. The leg is longer than the base. The perimeter of the triangle is 20. Find the length of each side of the triangle. *Please help me- I am having a really bad

19. ## Math

The triangle inequality theorem states that the sum of the lengths of any two sides of a triangle is greater than the length of the third side. The lengths of two sides of a triangle are 15 ft and 27 ft. Find the possible lengths of the third side. The

20. ## ALGEBRA

Which set of lengths could be the side lengths of a right triangle? (1 point) • 20 cm, 22 cm, 29 cm • 10 ft, 12 ft, 15 ft • 7 km, 24 km, 28 km • 13 in, 84 in, 85 in

21. ## Geometry

A triangle has side lengths of 4, 5, and 6. Which of the following correctly classifies this triangle. Acute, Right, Obtuse, Isosceles.

22. ## Maths

The perimeter of an isosceles triangle is 28cm. AB =4ycm,AC=(6y-2x+1)cm and BC =(x+2y)cm. Find x and y, state the lengths of the triangle.

23. ## Math (Geometry)

The perimeter of right triangle ABC is equal to the perimeter of isosceles triangle DEF. The lengths of the legs of the right triangle are 6 and 8. If the length of each side of the isosceles triangle is an integer, what is the greatest possible length for

24. ## Math

Classify the triangle by its sides. Triangle has side lengths of 15, 15, and 20. Scalene Triangle. Isosceles Triangle. Equilateral Triangle. Right Triangle.

25. ## math

Use the side lengths of the triangle to determine if the triangle is a right triangle. Explain your reasoning. someone PLZ help

26. ## Geometry

The lengths of the sides of a triangle are 6 cm, 7 cm and 9 cm. In a similar triangle whose perimeter is 110 cm, what is the length of the longest side, in centimeters? i know that the first triangle's perimeter is 22, but i'm not sure how this will help

27. ## isosceles triangle

An isosceles triangle is a triangle that has two equal sides. Find AB, BC and AC. Determine if the triangle is isoseles or not based on the lengths of the three sides. can someone show me how to solve?please The triangle is isosceles if AB = BC, or BC =

28. ## math

A triangle has vertices P(7,7), Q(-3,-5), and R(5,-3). a. calculate the lengths of the midsegmaents b. calculate the lengths of the three side of triangle PQR. c. compare your answers in a. and b. what do you notice

29. ## math

Which represents a reduction? A (x,y) —> (0.9x, 0.9y) B (x,y) —> (1.4x, 1.4y) C (x,y) —> (0.7x, 0.3y) D (x,y) —> (2.5x, 2.5y) 11 Which set of lengths are not the side lengths of a right triangle? A 28, 45, 53 B 13, 84, 85 C 36, 77, 85 D 16, 61, 65

30. ## Math (Geometry)

Find the length of the third side of a triangle if the area of the triangle is 18 and two of its sides have lengths of 5 and 10.

31. ## math

Determine whether you can construct many, one, or no triangle(s) with each description. a)An isosceles triangle with angle measures of 40° and 100° b)A right triangle with three congruent sides c)A scalene triangle with side lengths of 7 cm, 3 cm, and 9

32. ## Math

An equilatetal triangle with the lengths of its sides given in term of a and b. If the lengths are 4acm,3bcm and (a+b+c)cm. Find a and b and hence find the length of sides of the triangle.

33. ## math

if two triangles are similar, what can you say about the ratios of the two side lengths within one triangle and the ratios of the corresponding side lengths in the other triangle? HELP ASAP!! THANK YOU TO WHOEVER HELPS!!

34. ## geometry

An angle bisector of a triangle divides the opposite side of the triangle into segments 6 cm and 5 cm long. A second side of the triangle is 6.9 cm long. Find the longest and shortest possible lengths of the third side of the triangle. Round answers to the

35. ## Math

If all of the following triangles have the same perimeter, which has the greater area? a) a right triangle with legs of equal lengths b) an equilateral triangle, c) An obtuse triangle d) a triangle whose sides are all different lengths e)an isosceles

36. ## geometry

the sides of a triangle have lengths 4x+1, 2x+1 and 6x-1. if the lengths of the longest side is 6x-1, what values of x make the triangle obtuse?

37. ## Triangles

Try to draw a triangle with side lengths of 3 Cm and 6 cm and an included angle of 120 degrees. Do given segments and angles produce a unique triangle, more than one triangle,or no triangle.

38. ## geography

The lengths of two sides of a right triangle are 12 inches and 15 inches. What is the difference between the two possible lengths of the third side of the triangle? Round your answer to the nearest tenth.

Determine whether you can construct many, one, or no triangle(s) with each description. a)An isosceles triangle with angle measures of 40° and 100°-Many b)A right triangle with three congruent sides-one c)A scalene triangle with side lengths of 7 cm, 3

40. ## math

Let PSR be a triangle. Let A, B, C be the midpoints of the sides PS, PR and SR respectively. The following numbers 2,3,4 and 6 are lengths in inches of the three segments: AB, AC and BC and one of the sides of the given triangle PSR. Question: Which of the

41. ## Geometry

Two triangles are similar. The lengths of the sides of the smaller triangle are 5,6,and 9. The perimeter of the larger triangle is 50. What are the lengths of the sides of the larger triangle?

42. ## math

Triangle I has sides with lengths 2 2/3 cm, 4 1/2 cm and 3 cm. Triangle II has sides with lengths 8 cm, 13 1/2 cm and 9 cm. Are these triangles similar? If yes, what is the ratio of correspondence?

In a triangle, the lengths of the sides are 3,7,and 8. If the perimeter of a similar triangle is 54, what is the length of the longest side of the larger triangle? *Im not sure on how to begin solving*

44. ## Unknown

Carl is asked to draw a triangle with the following specifications: -all sides have whole number lengths in centimeters -the sum of the lengths of the two shortest sides equals 9 centimeters -when the side lengths are placed in order from least to

45. ## math

The base of an isosceles triangle is four less than the sum of the lengths of the legs. If the perimeter of the triangle is 44, find the length of the three sides of the triangle.[ Only an algebraic solution will be accepted ]

46. ## trig

In a right triangle the hypotenuse has length 10 and the the sum of the cotangents of all three angles of the triangle equals 2. What are the lengths of the other two sides of the triangle? (A) 5 and 5p3 (B) 5p2 and 5p2 (C) 1 and3 p11 (D) 4 and 2p21 (E)

47. ## Pre-algebra HELP ME PLEASE

A triangle has side lengths of (x+4), (4x-8), and (2x+8) units. If the perimeter of the triangle is at least 88units, what is the minimum length of each side of the triangle?

48. ## Trigonometry

if the lengths of the sides of an oblique triangle are 250 m. and the measure of the angle opposite of the later side is 37 degree 45'30", what are the possible lengths of the other sides?

49. ## maths

1.how many non congruent right triangles with positive integer leg lengths have areas that are numerically equal to 3 times their perimeters? 2.a triangle with side lengths in the ratio 3:4:5 is inscribed in a circle of radius 3.what is the area of the

50. ## math plz check ;-;

A triangle has sides of lengths 5 cm, 5 cm, and square root 47cm. Which of the following statements is true? A. The triangle is an obtuse triangle because (√47)^2>5^2+5^2 B. The triangle is an acute triangle because 5^2

51. ## math plz check ;-; sorry

A triangle has sides of lengths 5 cm, 5 cm, and square root 47cm. Which of the following statements is true? A. The triangle is an obtuse triangle because (√47)^2>5^2+5^2 B. The triangle is an acute triangle because 5^2

52. ## math plz help ;-;

A triangle has sides of lengths 5 cm, 5 cm, and square root 47cm. Which of the following statements is true? A. The triangle is an obtuse triangle because (√47)^2>5^2+5^2 B. The triangle is an acute triangle because 5^2

53. ## math

A triangle has vertices P(7,7), Q(-3,-5), and R(5,-3). a. calculate the lengths of the midsegmaents b. calculate the lengths of the three side of triangle PQR. c. compare your answers in a. and b. what do you notice

54. ## math

A triangle has vertices P(7,7), Q(-3,-5), and R(5,-3). a. calculate the lengths of the midsegmaents b. calculate the lengths of the three side of triangle PQR. c. compare your answers in a. and b. what do you notice?

55. ## math

triangle a and b are similar the ratio of a side of triangle b to a corresponding sid of triagle a is 5.3 the lengths of the sides of triangle a a are 18ft, 27ft and 30ft find the perimeter of triangle b

56. ## Pythagorean Theorem

7. The following are the lengths of the sides of four triangles. Which is a right triangle? Triangle EFG Triangle HIJ Triangle KLM

57. ## Math/Geometry

I don't understand how to do this exactly can someone help? List two sets of possible side lengths for two triangles. For example, you could list the side lengths 3, 4, and 5. One of your sets of side lengths should be able to form a triangle and one of

58. ## algebra

Kurt wants to informally prove the converse of the Pythagorean Theorem by producing some evidence that supports it. Recall that the converse of the Pythagorean Theorem states: If a triangle has side lengths a,b,c, such that LaTeX: a^2+b^2\:=\:c^2a 2 + b 2

59. ## geometry

show that the sum of the squares of the lengths of the medians of triangle equals three-fourths the sum of the squares of the lengths of the sides.(hint:place the triangle so that its vertices are at points(-a,0),(b0)and (0,c))

60. ## Geometry

Triangle I has sides with lengths 2 2/3 cm, 4 1/2 cm and 3 cm. Triangle II has sides with lengths 8 cm, 13 1/2 cm and 9 cm. Are these triangles similar? If yes, what is the ratio of correspondence? A.)Yes;1/3 B.)No C.)Yes;2/3

61. ## Geometry

An equilateral triangle has side lengths of 10. If the consecutive midpoints of the triangle are joined, then find the perimeter of the new triangle that is formed

62. ## math

the perimeter of isosceles triangle is 70 d. of the length of a leg of the triangle is 5 dm less than twice the lenth of the base, find the lengths of the sides of the triangle.

63. ## geometry

The sum of the lengths of the sides of triangle ABC is 25 in. The lengths of sides AB and BC are 9 inches and 8 inches. Find the length of side AC and classify the triangle.

64. ## Math

The area of a right triangle is 12 square inches, and the sum of the lengths of the two legs, a and b, is 16 inches. Write a system that could be used to find the lengths of the legs of the right triangle.

65. ## geometry

okay i have a few question... 1.Find the equation of a line through the points (-2, -5) and (-7, -5) 2. the three lengths 4, 6, 8, form a.not a triangle b.a right triangle c.an acute triangle d an obtuse triangel

66. ## Math

Triangle ABC is circumscribed about circle O and D,E, and F are points of tangency. If AD= 5, EB= 5 and CF= 10, find the lengths of the sides of the triangle and show that the triangle is isosceles

67. ## geometry

M and N are the midpoints ofandrespectively. Using graph paper, repeat this process from the last problem using different coordinates for P, Q, and R. How do these lengths MN and PQ compare now? What do you think you can conclude about the lengths of these

68. ## geometry

i need to figure out side lengths of congruent right isosceles triangle with no lengths given. I know that the hypotenese is 1 per pythogoras constant and the area is a^2/2. I don't have to prove area just side lengths.

69. ## geometry

In triangle ABC, • AB is x cm long • BC is twice the length of AB • AC is 10 cm longer than AB. The perimeter of the triangle is 42 cm. Write down an equation in x and solve it. Use your answer to find the lengths of the sides of the triangle.

70. ## Math

Examine the given right angle triangle. Are the side lengths given in the diagram possible? Justify your answer. lengths: 2.4m, 9.2m, 4.7m

71. ## maths

Triangle ABC has side lengths a,b and c. If these lengths satisfy a^2=a+2b+2c and −3=a+2b−2c, what is the measure (in degrees) of the largest angle?

72. ## maths

Triangle ABC has side lengths a,b and c. If these lengths satisfy a^2=a+2b+2c and -3=a+2b-2c, what is the measure (in degrees) of the largest angle?

73. ## math

Is it possible for the lengths of a right triangle to form a geometric sequence? If yes, determine the lengths and the measures of the acute angles. if it's not possible, explain why not.

74. ## math

Which represents a reduction? A (x,y) —> (0.9x, 0.9y) B (x,y) —> (1.4x, 1.4y) C (x,y) —> (0.7x, 0.3y) D (x,y) —> (2.5x, 2.5y) 11 Which set of lengths are not the side lengths of a right triangle? A 28, 45, 53 B 13, 84, 85 C 36, 77, 85 D 16, 61, 65

75. ## math

Two sides of an obtuse triangle have lengths 7 and 3. If the third side is also an integer, what are its possible lengths?

76. ## maths urgent

Plz help me solve these sums i will be great full 1.How many non congruent right triangles with positive integer leg lengths have areas that are numerically equal to 3 times their perimeters 2.A triangle with side lengths in the ratio 3:4:5 is inscribed in

77. ## math

A triangle has sides of lengths 9 cm, 40 cm, and 41 cm. Which statement is true about this triangle? Not a right triangle?

78. ## geometry

The perimeter of an isosceles triangle is 37 in. The lengths of the two equal legs are 6 in. less than 3 times the length of the base. Find the lengths of the three sides. 37=2L+2W W=3W-6 do i have this equation wrote right when i try to solve it the

79. ## Pythagorean Theorem

Pythagorean Theorem - david, Thursday, July 15, 2010 at 2:10pm EFG 3,6,9 HIJ 60,156,144 KLM 56,102,105 NOP 36,48,64 The following are the lengths of the sides of four triangles. Which is a right triangle? a.Triangle EFG b.Triangle HIJ c.Triangle KLM

80. ## math

if two triangles are similar, what can you say about the ratios of the two side lengths within one triangle and the ratios of the corresponding side lengths in the other triangle? Thank you anyone who helps :D

81. ## math

The lengths of the sides of a triangle are 4in.,14 in., and 16 in.If the longest side of a similar triangle measures 40 in., what is the length of the shortest side of this new triangle?

82. ## Triangles math

I want to confirm if I understood . Problem states : Draw a right triangle with a base of 2 units and a height of 3 units. Make three “copies” so that the lengths of the new sides are 50%, 300%, and 500% of the original. Solution: 1st triangle

83. ## geometry

The perimeter of an isosceles triangle is 37 in. The lengths of the two equal legs are 6 in. less than 3 times the length of the base. Find the lengths of the three sides. 37=2L+2W W=3W-6 do i have this equation wrote right when i try to solve it the

The radius of this circle is one unit. Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as side b. And Sides b is twice as long as side a. Basically the hypotenuse of this triangle is 1 and we are trying to use the

85. ## Math

The radius of this circle is one unit. Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as side b. And Sides b is twice as long as side a. Basically the hypotenuse of this triangle is 1 and we are trying to use the

86. ## Math Help!

The radius of this circle is one unit. Find the exact lengths of the legs in the right triangle if: Sides a is twice as long as side b. And Sides b is twice as long as side a. Basically the hypotenuse of this triangle is 1 and we are trying to use the

87. ## Math

The three sides of a triangle are consecutive even integers. If the perimeter of the triangle is 72 inches, find the lengths of the sides of the triangle

88. ## geometry

a triangle has two sides that have lengths of 14 feet and 22 feet. which of the following lengths could not represent the length of the third side... A 8FT B 12FT C 14FT D 20FT

Triangle ABC has side lengths 7, 24, and 25. Do the side lengths form a Pythagorean triple? Explain. Thank You so much! :) I'm having a hard time understanding this so it means alot!

90. ## math

The lengths of the three sides of a triangle are in the ratio 4:5:3. Find the length of each side if the perimetre of the triangle is 1.08?

91. ## math

The lengths of the three sides of a triangle are in the ratio 4:5:3. Find the length of each side if the perimetre of the triangle is 1.08?

92. ## math

The perimeter of a right triangle is 24 inch. Find the dimensions of the triangle if the sides are all whole number lengths.

93. ## maths

A triangle with side lengths in the ratio 3:4:5 is inscribed in a circle of a radius 3.what is the area of the triangle?

94. ## math

the lengths of the sides of a triangle are 10,17 and 21 cm. how long is the altitude of the triangle to the longest side?

95. ## Geometry

Tell if the measures 9,11, and 7 can be side lengths of a triangle. if so, classify the triangle as acute, right, or obtuse?

the lengths of two sides of a triangle are 15in.each.the third side measures 10 in.what type of triangle is this

97. ## math

the perimiter of a triangle is 122cm. If the lengths of the sides of the triangle are(3x-1)cm, (4x+2)cm and (2x-5), what is the lenght of the longest

98. ## math

If the lengths of two sides of a triangle are 12 and 15, which of the following must be true of p, the perimeter of the triangle? A. 3

99. ## Calculus

AN ISOSCELES TRIANGLE IS TO HAVE A PERIMETER OF 64CM. DETERMINE THE SIDE LENGTHS OF THE TRIANGLE IF THE AREA IS TO BE A MAXIMUM.

100. ## Math

I need help! What is the area of the triangular floor space enclosed by the glass tetrahedron? Round to the nearest tenth of a square foot. Enter only the number. ( Hint : Look at the green triangle to find the base, b , of each green triangle. Because b