Question

Find the value of x
A. 18
B. 27
C. 50
D. 40

Answer 1

the sum interior angles of a triangleis equal to 180

so (x + 13) +(x +23) + 90 = 180

2x + 36 + 90 = 180

2x = 180 - 126

2x = 54

x = 27