Question

1. Which of the following equations can be used to find the missing angle, x, in the triangle below? xo 42° 42° O A.X +84 = 180 O B. x+84 = 300 O C.X + 42 = 90 O D. X + 42 = 180

Answer 1

Given data:

The given figure of the triangle.

The expression for the angle sum property is,

$\begin{gathered} 42+42+x=180 \\ x+84=180 \end{gathered}$

Thus, option (A) is corect.