   Chapter 2.5, Problem 13E ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698

#### Solutions

Chapter
Section ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698
Textbook Problem
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# Find the number of sides for a polygon whose sum of the measures of its interior angles is: a) 900 ° b) 1260 °

To determine

a)

The number of sides for a polygon with the given sum of the measures of its interior angles.

Explanation

Given:

The sum of the measures of its interior angles is 900°.

Formula used:

The formula to calculate the sum of the measures of interior angles of a polygon is given by,

S=(n2)×180°

Here, S is the sum of the measures of interior angles of a polygon and n is the number of sides of the polygon.

Definition:

A polygon which is equiangular and equilateral is called regular polygon.

Calculation:

Calculate the number of sides for a polygon.

Substitute 900° for S in the above mention formula to calculate the number of side.

To determine

b)

The number of sides for a polygon with the given sum of the measures of its interior angles.

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