Problem:
Triangle ABC,ADE, and EFG are all equilateral. Points D and G are midpoints of AC and AE, respectively. If AB=4, what is the perimeter of figure ABCDEFG?
Answer Choices:
A. 12
B. 13
C. 15
D. 18
E. 21
Solution:
We have
AB+BC+CD+DE+EF+FG+GA4+4+2+2+1+1+1​==15​
Answer: C​.
The problems on this page are the property of the MAA's American Mathematics Competitions
