Question

Find the measure of a. A. 70 B. 90 C. 50 D. 100

Answer 1

If, in a circle, a triangle has for vertices the extremities of a diameter and a point of this circle then this triangle is right-angled.

I coded the schematic

circle with center O of diameter EF

measure of a 90°

Explanation:

Answer 2

I'M not sure but the correct answer is 90

so.. ...