Answer the Following:

Question

An equilateral triangle DOG, X is its orthocenter. Which statement(s) must be true? I. triangle DOG is equiangular II. X is the incenter of triangle DOG III. X is the point of concurrency of its 3 medians.

A. I only

B. I, II, and III

C. II and IiI only

D. I and III only

Answer 1

B: I,II and III are true

DOG's orthocenter, incenter and concurrency of medians are all the same point X

all angles = 60 degrees, so DOG is "equiangular"