Question

What is the measure of ZDEF? ○ 25° ○ 75° ○ 90° ○ 105°​

Answer 1

9514 1404 393

Answer:

(d) 105°

Explanation:

The sum of angles in a triangle is 180°.

28° + ∠DEF + 47° = 180°

∠DEF = 105° . . . . . . . . . . . subtract 75°, collect terms