Question

problem 16: find x. (first taught in lesson 30) after you enter your answer press go. x =

Explanation:

Step1: Find the third - angle in the triangle

The exterior angle of a triangle is equal to the sum of the two non - adjacent interior angles. The exterior angle of the triangle is $105^{\circ}$. One of the non - adjacent interior angles is $50^{\circ}$. Let the third angle in the triangle be $y$. So, $y+50^{\circ}=105^{\circ}$, then $y = 105^{\circ}-50^{\circ}=55^{\circ}$.

Step2: Identify the value of $x$

The angle $x$ and the angle $y$ are the same angle. So $x = 55$.

Answer:

$x = 55$