# a polygon with n number of sides will have how many digonals a)n b)n(n-3) c)n/2 d) n-3/2 e)n(n-3)/2

42,038 questions
1. ## maths: plzz help

(a) A polygon with n sides has a total of 1/p*n(n-q) diagonals, where p and q are integers. (i) find thhe value of p and q (ii) find the total number of diagonals in a polygon with 100 sides (iii) find the number of sides of a polygon which has a total of

asked by preeti on March 16, 2012
2. ## math.

Each exterior angle of a regular polygon is 15 degrees. 1.Determine the number of sides of the polygon. 2.What is the sum of the interior angles? please help!!!!!!!! i'd love to help but i can't remember how to do those problems. sorry. The sum of all the

asked by Shay on February 25, 2007
3. ## Geometry

The sum of the interior angles of polygon is 1800. Find the number of sides in the polygon and, what do you call that polygon?

asked by Anal-G on January 20, 2011
4. ## math

The apothem of a regular polygon is the distance from the center to any side. If the length of the apothem remains constant at 10 inches, the formula for the perimeter of a regular polygon as a function of the number of sides is ( ) ( )( ). As the regular

asked by Anonymous on May 15, 2015
5. ## Maths urgent

One regular polygon has twice as many sides as another. If the ratio of the interior angles of the first to that of second is 5:4, find the number of sides in each polygon?

asked by Rabinprakash Dahal on September 13, 2015
6. ## math

the sides of a polygon have lengths of 2cm,5cm,6cm,4cm,9cm and the perimeter of a smaller polygon is 78cm Find the length of the sides of the larger polygon

asked by the game on January 25, 2012
7. ## math--fast help please

Find the interior and exterior angle measurements of a polygon with this many sides: x=2y help? I don't want the answer, I just would like to know how to do this one. I don't see why a number of sides is being specified as an equation. The SUM of the

asked by Emily on March 29, 2007
8. ## Math

two sides of a polygon are parallel line segments.what number of sides the polygon could have

asked by flameclaw on April 4, 2016
9. ## College Geometry

In this assignment, you examine a process that links polygons and circles. You will reach some quantitative conclusions about their respective areas and the relationship between the two. As you know, a regular polygon has sides of equal length and angles

asked by Lisa on September 3, 2013
10. ## Math

The number of diagonals D I a polygon of n sides is given in the formula D=n(n-3)/2. Use the formula to find: A. The number of diagonals in a polygon with 9 sides. B. The number of sides of a polygon with 90 diafonals.

asked by Raven on November 23, 2016
11. ## Math

Are the statements Always, Sometimes or Never. Please explain why. Thanks. 1. An equilateral polygon is regular. 2. The greater the number of sides of a regular polygon, the smaller the measure of any of its exterior angle. 3. The sum of the measures of

asked by Brianna on October 14, 2014
12. ## math

Is each biconditional statement true or false? Select True or False for each statement. True False A polygon is a square if and only if the polygon has exactly four sides. A polygon has exactly five sides if and only if the polygon is a pentagon. A polygon

asked by Tariq Abdo on January 28, 2019
13. ## geometry

The measure of an exterior angle of a regular polygon is given. Find the number of sides of the polygon? Given number is 72?

asked by Dylan on March 3, 2014
14. ## Identifying patterns

If the pattern of polygons continues, how many sides will polygon 98 have? and there is a picture of polygon 1 which is a 3-sided triangle polygon 2- which is is a sqaure polygon 3- which is a 5 sided pentagon. polygon 4- which is a six sided hexagon

asked by Chelsea on May 11, 2011
15. ## Math Geometry

Polygon ABCD is similar to polygon WXYZ, and and are corresponding sides. You know the perimeter of each polygon, and you know the measure of BC. What can you find? A. Measure of all sides of both polygons B. Measure of

asked by Seth on June 21, 2016
16. ## math

one of the interior angles of a regular polygon is 144degrees find the number of sides of the polygon

asked by Nita on April 5, 2016
17. ## math

Each interior angle of a regular polygon is 140 degree. the number of sides of the polygon is?

asked by rajkishor ray on September 18, 2014
18. ## Geometry

If each exterior angle of a regular polygon measures 40 degrees, what is the total number of sides in the polygon? a.) 9 b.) 8 c.) 6 d.) 5

asked by Taylor on December 27, 2011
19. ## Maths

The sum of interior angles of an irregular polygon is 5040 .find the number of sides of the polygon

asked by Langton on September 27, 2017
20. ## math

A regular polygon has the sum of the interior angles as 3240degrees . find the number of sides the polygon has.

asked by Nita on April 5, 2016
21. ## goemetry

can the following formula to find the sum of the interior angles of a polygon be used on a concave polygon? 180(n-2) where n= the number of sides

asked by mike on February 24, 2010
22. ## geometry

If a polygon is a kite, which statement is not true? a. The polygon is a quadrilateral. b. The polygon has exactly two distinct pairs of adjacent congruent sides. c. The diagonals of the polygon are congruent. d. The diagonals of the polygon are

asked by roddy on January 3, 2011
23. ## Geometry

In a regular polygon (equal sides and angles), you use (n-2)180 to find out what the interior angle sum is (n=number of sides in polygon) and you divide by that number by whatever n is to find out the measure of an individual angle, right? Well, there is

asked by Emily on September 27, 2007
24. ## math

The number of diagonals, d, in a polygon of n sides is given by the formula d=n^2-3n/2. If a polygon has 90 diagonals, how many sides has it? a. 8 b. 10 c. 12 d. 15 e. 20 please answer and explain

asked by thomas on April 27, 2014
25. ## Geometry

If the sum of the measures of the interior angles of a n-sided polygon is 1,0800, then set up a mathematical model to find the number of sides of the polygon.

asked by Summer. on June 3, 2015
26. ## Math

Tell whether the pair of polygons is similar. Explain why or why not. The polygon A is bigger. The side of the polygon is 10ft and the top sides of the polygon is 11ft. The polygon B is smaller. The side of the polygon is 8.4ft and the top side of the

asked by Enna on November 9, 2018
27. ## math

A regular polygon is inscribed in a circle of radius 9 cm. Calculate the perimeter of the polygon to the nearest tenth if the polygon has 6 sides.

asked by Anonymous on November 6, 2016
28. ## math

A regular polygon is inscribed in a circle of radius 11 cm. Calculate the perimeter of the polygon to the nearest tenth if the polygon has 8 sides.

asked by Anonymous on November 6, 2016
29. ## math

Is each biconditional statement true or false? Select True or False for each statement. A polygon is a square if and only if the polygon has exactly four sides. true or false A polygon has exactly five sides if and only if the polygon is a pentagon. true

asked by Jaaide on September 26, 2017
30. ## math

the sides of a polygon are 3,4,5,6 and 7cm. Find the perimeter of a similar polygon, if the sides corresponding to 5cm is 9cm long.

asked by roldan on August 6, 2016
31. ## gr9math

how many sides does a polygon have if the sum of its interior angles are a) 1080 b) 1260 How could i figure this out without being able to know how many sides the polygon has?

asked by Rebecca on May 23, 2010
32. ## math

A side of regular polygon is 3.5 cm in length.the perimeter of the polygon is 17.5 cm. How many sides does the polygon have?

asked by nimshi on September 30, 2012
33. ## Geometry

the number of sides in 2 regular polygons is in the ratio 5:4 an the difference between their angles is 9^o. Find the number of sides in the polygon

asked by HELP!!! URGENT on December 2, 2011
34. ## Geometry

the number of sides in 2 regular polygons is in the ratio 5:4 an the difference between their angles is 9^o. Find the number of sides in the polygon

asked by HELP!!! URGENT on December 2, 2011
35. ## Math

The interior angle of a regular polygon is 200 more than 3 times the exterior angle. Find the number of sides of the polygon.

asked by Nikki on April 23, 2019
36. ## math

The size of an interior angle of a regular polygon is 3x° while its exterior angle is (x- 20)°. Find the number of sides of the polygon

asked by kudu on February 17, 2015
37. ## maths

each interior angle of a regular polygon is 18 degree more than eight times an exterior angle. the number os sides of polygon is.

asked by polygon on March 28, 2012
38. ## geometry

if a polygon has 53 sides, what will the total number of degrees (i,e. the total number of interior angles) in this polygon

asked by zyan on February 1, 2011
39. ## geometry

if a polygon has 53 sides, what will the total number of degrees (i.e. the total sum of interior angles) in this polygon

asked by zyan on February 1, 2011
40. ## trig

the angle in one regular polygon is to that in another as 3:2 and the number of the sides in first is twice that in second determine the the number of sides of 2 polygons

asked by seema on June 19, 2011
41. ## Algebra

1. Solve the equation below for x interms of a 4(ax+3)-3ax=25+3a 2. The formula for the sum of the degree measures of the interior angles of a polygon is S=180(n-2). Solve for n, the number of sides of the polygon, in terms of S. IM STRUGGLING PLEASE HELP

asked by Kianna on December 20, 2016
42. ## geometry

If the ratio of the interior angle to the exterior angle is 5:1 for a regular polygon, find a. the size of each exterior angle b. the number of sides of the polygon c. the sum of the interior angles d. Name the polygon

asked by jodi on April 24, 2012
43. ## math

find the sum of the measures of the intieior angles of each polygon. -hexagon -pentagon -quadrilateral -octagon -16-gon -27-gon The key is the sum of the measures. All of these figures have the same total number of degrees in their interior angles. What do

asked by kristen on March 12, 2007
44. ## Math

The ratio of z sides of two similar polygon is 3:2 the area of the smaller polygon is 24cm square what is the area of larger polygon

asked by Hermella on December 16, 2015
45. ## math

The measure of an interior angle of a regular polygon is 135 degrees. Find the number of sides in the polygon. This is what I tried: 180(x-2)=135 [Interior Angle Sum Theorem] x-2=.75 x=2.75 That can't be right though. Help? Not sure about your formula.

asked by Emily on March 27, 2007
46. ## Math

two regular polygons of the same number of sides have sides 5 ft. and 12 ft. in length, respectively. what is the length of the side of another regular polygon of the same number of sides, if its area is equal to the sum of the other two.

asked by collins on October 19, 2013
47. ## physics/math

Does the formula Sum of internal angles of a polygon = (n - 2)x180 degrees, where n represents number of sides, work for polygons of interacting sides?

asked by sandhya on August 24, 2010
48. ## Maths

Two polygons have te number of their sides in the ratio 1:3.The sums of their interior angles are in the ratio of 4;1. Find the number of sides of each polygon.

asked by Erin on February 7, 2011
49. ## math214

A student asks whether a polygon whose sides are congruent is necessarily a regular polygon and whether a polygon with all angles congruent is necessarily a regular polygon. How do you answer?

asked by alicia on February 16, 2010
50. ## please help!!!!! someone

Each exterior angle of a regular polygon is 15 degrees. 1.Determine the number of sides of the polygon. 2.What is the sum of the interior angles? if the exterior angle is 15, then the interor angle is 165. 165n=(n-2)180 solve for n. I need help to study

asked by Shay on February 25, 2007
51. ## MATH

I know a polygon has many sides am I correct to say that a concave polygon has two sides.

asked by COLLEEN on June 22, 2011
52. ## Geometry

1. How many sides does a regular polygon have if one exterior angle is 90 degrees? 3 4 5 6 2. The measures of three angles of a quadrilateral are 80, 90, and 103 degrees. Find the measure of the fourth angle. 67 77 87 97 3. The sum of the interior angles

asked by Justin on November 30, 2010
53. ## geometry

The sides of a polygon are 3, 5, 4, and 6. The shortest side of a similar polygon is 9. Find the ratio of their perimeters.

asked by iziah on May 2, 2019
54. ## gomitry

A polygon is such that when all diagonals from one vertex are drawn, eleven triangles are formed. How many sides does the polygon have?

asked by Luke Jones on August 23, 2017
55. ## geometry

The sum of the measures of the interior angles in a polygon is 540 degrees. How many sides does the polygon have?

asked by Carl on December 13, 2010
56. ## math

Each side of a polygon is 0.29cm in length And its perimeter is 1.74cm. How many sides does the polygon has?

asked by tejashree on August 23, 2016
57. ## Maths

Each side of a regular polygon is 4.05 cm in length. How many sides does the polygon have if its perimeter is 0.486m ?

asked by Anonymous on October 19, 2017
58. ## math

If a convex quadrilateral polygon has two rectangle and each angle is120° then what is the no of sides of polygon?

asked by jyotiprakash on August 28, 2016
59. ## maths

The diagram shows part of a regular polygon. work out how many sides the polygon has. (it is 156 degrees).

asked by corinna on October 29, 2007
60. ## Math_ Geometry

The sum of the interior angles of a regular polygon equals 1260 degrees. How many sides does a polygon have?

asked by Sarah on July 27, 2017
61. ## Maths

Each side of a regular polygon is 4.05 cm in length. How many sides does the polygon have if its perimeter is 0.486m ? Exaplain how 4.05n=486

asked by Anonymous on October 20, 2017
62. ## math

each exterior angle of a regular polygon is 12 degrees. how many sides does the polygon have?

asked by shar on January 17, 2012
63. ## geometry

If the measure of an exterior angle of a regular polygon is 24, how many sides does the polygon have?

asked by BaileyBubble on December 12, 2012
64. ## geometry

if each angle in a regular polygon is 157.5 degrees, how many sides does the polygon have?

asked by Anonymous on September 23, 2009
65. ## geometry

The number of lines of symmetry of any regular polygon is equal to the number of sides. Is that correct?

asked by kina on May 17, 2013
66. ## Math

1. The measure of an interior angle of a regular polygon is 20 more than thrice the measure of its adjacent exterior angle. Find the number of sides of the polygon and its total number of diagonals. 2. Find the sum and difference between the sum of the

asked by Brianna on October 14, 2014
67. ## Math

If two of the line segments of a polygon are parallel, what is the least number of sides it could have?

asked by Nelson on November 8, 2011
68. ## math

if 2 of the line segments of a polygon are parallel, what is the least number of sides it could be?

asked by Elina on April 2, 2014
69. ## geometry

find the number of diagonals in a 14 sides polygon can you help me wiht this?

asked by marko on April 2, 2012
70. ## geometry

tell if the figure is a star polygon, a polygon, or other, and how many sides it has. {9/3}

asked by jeng on October 24, 2009
71. ## Math

1a. Draw a circle of 15mm b. Construct 2diameters at angles to each other c. Construct two more 2diameters bisecting the angles between those drown d. Join the ends of the 2diameters to form a regular polygon. What sort of polygon is it? e. Measure the

asked by Simon on June 7, 2019
72. ## math

A sum is invested at compound interest payable annually. The interest in two successive years was Rs 900 and Rs 981. Find the sum. If the sum of all internal angles and sum of all external angles of a regular polygon are equal, then the number of sides of

asked by adam on November 20, 2015
73. ## Math

Each exterior angle of a regular polygon is 15 degrees. How many sides does the polygon have? and What is the sum of the interior angles? Since this is not my area of expertise, I searched Google under the key words "polygon angles" to get these possible

asked by Shay on April 4, 2007
74. ## PLZ HELP Math!

1. Estimate the measure of the angle. Graphic 90° 85° 102° 78° 2. Which figure is NOT a polygon? Graphic Graphic Graphic Graphic 3. Which pair of angles are vertical? Graphic ∠b and ∠c ∠b and ∠e ∠b and ∠d ∠b and ∠f 4. Which statement is

asked by name:unknown on February 14, 2019
75. ## Math

Find the number of the sides of a regular polygon, if the measure of one of its exterior angle is between 28 and 32.

asked by Erin on October 3, 2014
76. ## GOVT JUNIOR COLEGE MATHS

FIND THA NUMBER OF SIDES OF A REGULAR POLYGON IF EACH EXTERIOR ANGLE MEASURES. 30'

asked by NIZAM on September 21, 2016
77. ## Geometry

How do I find the number of sides a regular polygon has if I only know te measure of the exterior angle, such as 40 degrees?

asked by Erick on January 13, 2008
78. ## Math

Calculate the number of sides of a regular polygon whose interior angles are each 156 degrees.

asked by AJ on December 4, 2011
79. ## Geometry

What geometric figure does a regular polygon begin to resemble as the number of sides increases?

asked by Anonymous on March 16, 2012
80. ## Algebra II

1. Find the value of 5 + 8 x 2 divided by 4 - 11 2. Evaluate (a-y)^2 + 2y^3, if a =2 and y= -3 3. Evaluate -|a-3b|, if a=-2 and b = 6 4. The formula A= 180 (n-20 OVER N relates the measure A of an interior angle of a regular polygon to the number of sides.

asked by PJ. on May 4, 2008
81. ## math

The sum of interior angels and the sum of exterior angles of polygon are in the ratio 9:2.find the sides of regular polygon.

asked by rohit on December 18, 2015
82. ## algebra

the sides of a polygon are 8, 9, 29, 24, and 14 centimeters long. findd the length of the longest side similar polygon whose shortest side is 2.

asked by dont trust on February 26, 2014
83. ## math

Is this a star polygon, a polygon, or other, how many sides does it have? {9/3}

asked by Zach on September 20, 2010
84. ## Geometry

Please Help Me! Find the area of this polygon rround to the nearest tenth. The polygon is a hexagon with six sides, and all they give is the apothem which is 6 inches long, what is the area? I know the formula is A=1/2ap But can anyone help!

asked by Geomtery on February 21, 2012
85. ## Cycle geometry

An interior angle of a regular convex polygon is 162(degrees). Find the number of sides.

asked by Christopher on June 29, 2015
86. ## geometry

What is the relationship between the number of vertices of a regular polygon and the number of summetry lines of the polygon?

asked by Astrid on December 7, 2009
87. ## Math please helppp

1 Find the missing angle measure in the polygon A ] 77 B ] 87 C ] 97 D ] 107 i think its b 2 Find the sum of the interior angles in 10 - sided polygon A ] 1,260 B ] 1,440 c ] 1,620 d ] 1,800 i think its c or b 3 Find the measure of each interior angle in a

asked by melissa on December 4, 2015
88. ## 8th grade math

The total number of interior angles in two regular polygons is 17, and the total number of diagonals is 53. How many sides does each polygon have? Show work and explain.

asked by Anonymous on December 18, 2011
89. ## geometry

A polygon has d diagonals. If the polygon had one more side, it would d + 10 diagonals. How many sides does the polygon have?

asked by melissa on April 13, 2011
90. ## Math

Let d(n) represent the number of diagonals of a polygon of n sides. Here is a table of values of d(n). n 3 4 5 6 7 8 9 10 11 d(n)0 2 5 9 14 20 27 35 44 Find a polynomial formula for d(n) in terms of n

asked by Heather on February 21, 2016
91. ## Geometry

What geometric figure does a regular polygon begin to resemble as the number of sides increases? How come the answer is a circle?

asked by Anonymous on March 17, 2012
92. ## geometry

Suppose the perimeter of a polygon is 27 inches. If the sides of the polygon are scaled by a factor of 1/3, what is the new perimeter?

asked by sharon on January 26, 2010
93. ## Math

how do I find the number of degrees in the point angle of a {5/2} star polygon? Since it is a polygon and a polygon has to equal 360 degrees...would I divide 360 by 5? Please help

asked by Punkie on December 10, 2009
94. ## Math

how do I find the number of degrees in the point angle of a {5/2} star polygon? Since it is a polygon and a polygon has to equal 360 degrees...would I divide 360 by 5? Please help

asked by Punkie on December 9, 2009
95. ## Math

The measure of each interior angle of a regular polygon with n sides is [(n - 2)180 / n] degrees. What is the measure of each interior angle of a regular polygon with n sides, in radians? A. (n - 2)pi / 4n B. (n - 2)pi / 2n C. (n - 2)pi / n D. (n - 2)2pi /

asked by Anonymous on May 3, 2015
96. ## Math

An n-sided polygon has interior angles of which 4 of them are of sizes 125,220,40 and 295 degrees . The remaining interior angles are of sizes 20 degrees each. Find the value of n, My working: let the number of sides for the polygon be n and the remaining

asked by Nurul on December 5, 2014
97. ## Maths

The sum of the interior angles o a regular polygon is 30 right angles. How many sides have the polygon?

asked by James on July 7, 2016
98. ## Math--Area

Find the area of each regular polygon to the nearest tenth. Octagon with side length of 10 kilometers. Heres what I tried; but I don't know if im on the right track. Area=1/2 * Perimeter* Apothem Perimeter=base of octagon* number of sides Perimeter=10*8=80

asked by natalie on April 4, 2007
99. ## geometry

a star, is it a polygon? if it is name it by the num,ber of sides... 10 sides i beilieve?

asked by ceilia on December 15, 2007
100. ## Geometry

If a polygon has 33 sides what is a) The sum of the measures of the angles of the polygon? b) The sum of the measures of the exterior angles, one per vertex, of the polygon?

asked by Zelda on February 21, 2010