Question

So the theorem is AIA but I can't find the value of x help please (oh and I thin the image is upsidedown.)

Answer 1

The angles are equal (alternate angles in parallel lines)
X + 86 = 80
X = 80 - 86 = -6

Answer 2

x = - 6

Explanation:

Remark

When parallel lines are cut by a transversal (as these lines are) then there are only 2 values for the angles can be made. In this case, the angles formed are alternate interior angles.

Alternate interior angles are equal.

Solution

x + 86 = 80 Subtract 86 from both sides.

x + 86-86 = 80 -86

x = - 6