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For each polygon, find (a) the interior angle sum and (b) the exterior angle sum.

n-gon.

Short Answer

Expert verified
  1. The interior angle sum for n-gon is n-2180°.
  2. The exterior angle sum for n-gon is 360°.

Step by step solution

01

Part a. Step 1. Write the theorem for the sum of interior angles for convex polygon.

The theorem for the sum of interior angles for convex polygon states that the sum of measures of the interior angles of a convex polygon with sides is n-2180.

02

Part a. Step 2. Find the number of sides in n-gon polygon.

The number of sides in a n-gon polygon is n.

03

Part a. Step 3. Find the value of the interior angle sum of the Decagon.

By using the theorem for the sum of interior angles for convex polygon, the sum of the interior angles for the polygon having sides is given by:

n2180

Therefore, the sum of interior angles for the n-gon is n2180°.

04

Part b. Step 1. Write the theorem for the sum of exterior angles for convex polygon.

The theorem for the sum of exterior angles for convex polygon states that the sum of measures of the exterior angles of a convex polygon is 360°.

05

Part b. Step 2. Find the number of sides in n-gon polygon.

The number of sides in a n-gon polygon is n.

06

Part b. Step 3. Find the value of the exterior angle sum of the Decagon.

By using the theorem for the sum of exterior angles for convex polygon, the sum of the exterior angles for the polygon havingn sides is 360°.

Therefore, the sum of exterior angles of the n-gon is 360°.

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