GRE Question of the Day (October 12)

Math

Triangles ABC, ACD, and ABD are all isosceles triangles. Point E (not shown) is the midpoint of BD¯¯¯¯¯¯¯BD¯. If the ratio of the length of CE¯¯¯¯¯¯¯CE¯ to the length of BC¯¯¯¯¯¯¯BC¯ is equal to 3√:23:2, then what is the measure, in degrees, of ∠CAD?

A. 10

B. 15

C. 30

D. 45

E. 60

Correct Answer - B - (click and drag your mouse to see the answer)

Question Discussion & Explanation