Jamal used a hinged mirror to create a regular polygon like you did in Lesson 7.1.4.
If his hinged mirror formed a
angle and the core region in front of the mirror was isosceles, how many sides did his polygon have?
Use the formula:
Now Jamal has decided to create a regular polygon with
sides, called a nonagon. If his core region is again isosceles, what angle is formed by his mirror?
Use the formula given in hint (a) and solve for the unknown piece.