Question

find X in Triangle - a = 36° ,b = x°, c = 123°​

Answer 1

Answer:

21

Step-by-step explanation:

a + b + c = 180 ( Sum of measures of all angles of a triangle is 180)

36 + x + 123 = 180

x + 159 = 180

x = 180 - 159

x = 21