Question

this is parallel lines & angles question. I’m in a little hurry & i’m confused about this question. It asks “Find x”

Answer 1

x = -7

Step-by-step explanation

The two given angles are vertical angles, because

The 80-degree angle is a corresponding angle of the blue angle, and the x+87 angle is corresponding to the red angle. Therefore, these two angles are vertical and hence they are congruent:

`80=x+87`

Subtract 87 from both sides to solve for x:

`\begin{gathered} 80-87=x+87-87 \\ -7=x \end{gathered}`