posted by Cassidy .
Brian has been making octagonal wooden puzzles. He wants to make some hexagonal puzzles next. By how much does he needs to increase or decrease the angle measure on his template to make the hexagonal puzzles?
A. increase by 15 degrees
B. decrease by 15 degrees
C. increase by 35 degrees
D. decrease by 35 degrees
Octagon = 360o/8angles = 45o/angle,
Hexagon = 360o/6angles = 60o/angle.
60 - 45 = 15o Increase.