17. In △ABC, ∠B is a right angle and the measure of ∠A is 36°. A second right triangle, △DEF, is being constructed so that ∠E is a right angle and the measure of ∠D is double the measure of ∠A. What is the measure of∠F ?
Your Answer is
Correct Answer is E
Explanation
∠F = 180° - 90° - 2 × 36° = 18°