### Home > INT2 > Chapter 10 > Lesson 10.2.2 > Problem 10-67

10-67.

is a regular pentagon inscribed in

Draw a diagram of

andon your paper. What is

? How did you determine your answer?Recall that the sum of the interior angles of a regular pentagon is

. What is

? What relationship did you use?Notice that

is one-fifth of the circle.What is

*m*? Show more than one way to calculate this measure. What is the relationship between

and the arc in question?