### Home > CCG > Chapter 9 > Lesson 9.2.4 > Problem 9-105

9-105.

Without using a calculator, find the sum of the interior angles of a

Look at the Math Notes box in Lesson 8.1.5 for extra help.

Let = number of sides,

9-105.

Without using a calculator, find the sum of the interior angles of a

Look at the Math Notes box in Lesson 8.1.5 for extra help.

Let = number of sides,