Question

I NEED HELP ASAP. find the value of the variable that results in congruent triangles.

A. 80
B. 10
C. 50
D. 30​

Answer 1

A) 80°

Explanation:

55° + 45° + (5x + 30)° = 180°

55° + 45° + 30° + 5x = 180°

130 + 5x = 180°

5x = 50°

x = 10°

=> (5x + 30)° = 5*10° + 30° = 50° + 30° = 80