What is the angle of x ??

80 degrees

Step-by-step explanation:

a straight line is an 180 degree angle. So if one side is 130 degrees, the other side is 50 degrees.

In an isosceles triangle the two bottom angles are the same size. So that means both bottom angles are 50 degrees. So, 50 + 50 = 100

The total inside angles of a triangle always equal 180 degrees when added up.

So, you subtract 100 from 180 and you get 80 degrees, which is the angle of X.

It says practice so you don't have to rush it. Pretty sure u can get the answers at the end of it and retake it.