¶ 1983 AHSME Problem 10
Problem:
Segment is both a diameter of a circle of radius and a side of an equilateral triangle . The circle also intersects and at points and , respectively. The length of is
Answer Choices:
A.
B.
C.
D.
E.
Solution:
In the figure, since is a diameter. Thus is an altitude of equilateral . It follows that is a triangle and .
