Questions on Geometry: Polygons answered by real tutors!

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Question 389431: You are given the measure of each interior angle of a regular n-gon. Find the value of n.
a) 135 degrees
b) 156 degrees
c) 162 degrees
d) 172 4/5 degrees
Click here to see answer by richard1234(5390)

Question 389562: How do you find the area of a regualr ploygon when the apothem is on the vertex of a regular polygon.
Click here to see answer by Alan3354(30993)

Question 390241: A “five-pointed star” can be constructed by taking a regular pentagon and drawing
straight lines from the first vertex to the third, the third to the fifth, the fifth to the second, and so on. Prove that the sum of the angles of the five vertices of the star is 180 degrees.

Click here to see answer by Edwin McCravy(8909)

Question 390576: a regular polygon has 12 sides... what is the measurements of each interiot angle?
please show all your work
Click here to see answer by stanbon(57361)

Question 390699: The perimeter of a regular hexagon is 72ft. What is the approxiamte area of this polygon?
Click here to see answer by MathLover1(6634)

Question 390956: 240=1/2[4(x+2)](10+20)
Click here to see answer by rfer(12660)

Question 391116: find the number of sides an equiangluar polygon has if each of its angles is 144 degrees.
i need to know what formula i can use to work this problem out and the answer
Click here to see answer by richard1234(5390)

Question 391374: A quadrilateral has three angles that measure 90 degrees , 100 degrees , and 120 degrees. Which is the measure of the fourth angle?

Click here to see answer by gioxi(1)

Question 391374: A quadrilateral has three angles that measure 90 degrees , 100 degrees , and 120 degrees. Which is the measure of the fourth angle?

Click here to see answer by solver91311(16897)

Question 391443: if polygon cgmsy is similar to polygon ahlrx, what do you know about the angle measures and sides lengths of the two quadrilateral.
Click here to see answer by solver91311(16897)

Question 391488: the measure of an exterior angle of an equiangular polygon is twice that of an interior angle. What is the name of the polygon?
Click here to see answer by stanbon(57361)

Question 390556: If all of the diagonals are drawn from a vertex of an n-gon, how many triangles are formed?
Click here to see answer by robertb(4012)

Question 392784: The measure of each interior angle of a regular polygon is 20 degrees more than 3 times the measure of each exterior angle. How many sides does the polygon have?
Click here to see answer by stanbon(57361)

Question 393430: What is the name of an equiangular polygon if the ratio of the measure of an interior angle to the measure of an exterior angle is 7:2?
How do I get the answer?
Click here to see answer by scott8148(6628)

Question 393428: In an equiangular polygon, the measure of each exterior angle is 25% of the measure of each interior angle. What is the name of the polygon?
I need to know how to get the answer! Thanks!
Click here to see answer by edjones(7569)

Question 393836: how many sides does a polygon have if the sum of its angle measures is 2700 degrees?
Click here to see answer by SavannahStar(3)

Question 394401: If X = 11 inches, Y = 9 inches, and Z = 6 inches, what is the area
Click here to see answer by jim_thompson5910(28595)

Question 394401: If X = 11 inches, Y = 9 inches, and Z = 6 inches, what is the area
Click here to see answer by richard1234(5390)

Question 394503: The measure of an interior angle of a regular polygon is given which is 90. find the number of sides in each polygon
Click here to see answer by Alan3354(30993)

Question 394503: The measure of an interior angle of a regular polygon is given which is 90. find the number of sides in each polygon
Click here to see answer by jrfrunner(365)

Question 394542: I need help finding the perimeter of each polygon. the lesson is "solving problems with polynomials" There is a rectangle. On the left and right sides it is y^2-3 and the top and bottom sides are y^2+2y-4
Click here to see answer by edjones(7569)

Question 394890: "How can I determine the range of possible values of the fourth side of a quadrilateral if there are three values of sides that are given? thanks!
Click here to see answer by MathLover1(6634)

Question 395644: If I were to draw a ten sided polygon with each side measuring 13' 3/4" long, how big of a circle would I need to make?
Click here to see answer by Alan3354(30993)

Question 397515: Find the number of sides of an equiangular polygon if each interior angle is 170
Click here to see answer by solver91311(16897)

Question 397515: Find the number of sides of an equiangular polygon if each interior angle is 170
Click here to see answer by Alan3354(30993)

Question 397995: Hello!
I have a big problem - I can't solve a problem and I'm a bit mad beacause of that. Hope you can help me. :)
Well, here's the problem:
Around a given sphere is described right prism whose base is a rhombus. Longer diagonal of the prism makes with the plane base angle A. Find a sharp angle rhombus.
I'm sure it's not complicated, but I just couldn't find the solution.
Thank you very much!
Click here to see answer by Alan3354(30993)

Question 398123: What is the sum of the interior angles in a polygon?
What is the sum of the exterior angles of a polygon?
How do you find the measure of one angle of a polygon?
Click here to see answer by Earlsdon(6287)

Question 398248: The sum of the measures of the interior angles of a convex polygon is given. Classify the polygon by the number of sides.
1. 1980 degrees
2. 2340 degrees
Click here to see answer by Alan3354(30993)

Question 398897: If one angle of a parallelogram is 72, what is the measure of the opposite angle?
Click here to see answer by rapaljer(4667)

Question 398892: What is the measure to the nearest hundredth of each angle of a regular polygon having seven sides?
Click here to see answer by Alan3354(30993)

Question 398898: If the measures of each exterior angle of a regular polygon is 20, how many sides are there in the polygon?
Click here to see answer by Alan3354(30993)

Question 399886: as the number of sides of a regular polygon increases, What happens to the measure of each exterior angle? What is the least to the possible measure of an exterior angle of a polygon?
Click here to see answer by solver91311(16897)

Question 400021: The area of a rergular polygon is 36 in. square.Find the length of a side if the polygon has the given number of sides.Round your answer to the nearest tenth.
Click here to see answer by Alan3354(30993)

Question 400143: Line segment AC is a diagonal of regular pentagon ABCDE. What is the measure of angle ACD?
A. 36 degrees
B. 54 degrees
C. 72 degrees
D. 108 degrees
I tried to use [(180)(n-2)/n] to find the measure of an interior angle and i got 108 degrees. since i knew that the diagonal went through angle ACD so i tried to figure out how to determine it but i am at a loss.
thank you!
Click here to see answer by ewatrrr(10682)

Question 402605: how do you find the value of x in a four sided polygon with angle measures 130, 110, x-3 and x
Click here to see answer by algebrahouse.com(1079)

Question 402759: Find the surface area of a hemisphere with radius = 7m.
Click here to see answer by Alan3354(30993)

Question 402756: Find the volume of a rectangular solid with cylindrical hole of diameter 34.
Click here to see answer by Alan3354(30993)

Question 403017: What is the most descriptive name for a quadrilateral that has all of its sides congruent?
Click here to see answer by solver91311(16897)

Question 403149: how do you find the number of sides of a polygon if the interior angles measure 140 degrees
Click here to see answer by Alan3354(30993)

Question 403149: how do you find the number of sides of a polygon if the interior angles measure 140 degrees
Click here to see answer by scott8148(6628)

Question 403248: What is the number of sides of a regular polygon if each interior angle measure is 5 times the measure of each exterior angle
Click here to see answer by stanbon(57361)

Question 403280: What is the perimeter of a regular pentagon with 8 cm sides?
Click here to see answer by richard1234(5390)

Question 403280: What is the perimeter of a regular pentagon with 8 cm sides?
Click here to see answer by Alan3354(30993)

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