Question

What is the measure of ABC in the figure below? (Will give medal, Picture below)
A. 15°
B. 30°
C. 45°
D. 90°
E. 15°
F. Can't be determined.

Answer 1

the triangles ABD and CBD share a side(BD), both have a right angle and a side of 15 units

Answer 2

30°?

Answer 3

actually, I think it can't be determined, not sure..

Answer 4

It was 90° o.O

Answer 5

90 is the answer?

Answer 6

I thought so at first, but only if AD is parallel to BC

Answer 7

Yeah D:

Answer 8

if you separete the two triangles and rotate one of them they look congruent triangles