Wednesday
April 1, 2015

Homework Help: math

Posted by cole on Tuesday, January 30, 2007 at 5:20pm.

What polygon has 20 diagonals?I don't know how to figur this out.
THANKS!!!!

A rectangle (4 sides) has 2 diagonals.
A hexagon (6 sides) has 3 diagonals.
An octagon (8 sides) has 4 diagonals.
A _____ (20 sides) has 20 diagonals.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

maths: plzz help - (a) A polygon with n sides has a total of 1/p*n(n-q) ...
Geometry - I had to fill out a chart stating the properties of certine shapes(...
math - The number of diagonals, d, in a polygon of n sides is given by the ...
Geometry - I had to fill out a chart stating the properties of certine shapes(...
Geometry - The diagonals of rectangle ABCD are AC and BD. Hallie found that the ...
geometry - A polygon has d diagonals. If the polygon had one more side, it would...
geometry - If a polygon is a kite, which statement is not true? a. The polygon ...
Maths - Two pairs of touching sides are the same length. The diagonals meet at ...
Maths - The question says: Two pairs of touching sides are the same length. The ...
geometry - 1. An exterior angle of a regular polygon measures 30 degrees. What ...

Members