Question

question a side of the triangle below has been extended to form an exterior angle of 71°. find the value of x. answer attempt 2 out of 2 x =

Explanation:

Step1: Recall exterior - angle property

The exterior angle of a triangle is equal to the sum of the two non - adjacent interior angles. So, $71^{\circ}=49^{\circ}+x^{\circ}$.

Step2: Solve for $x$

Subtract $49^{\circ}$ from both sides of the equation: $x = 71 - 49$.

Answer:

$22$