This theorem says that the exterior angle is equal to the sum of its remote interior angles. In other words, 140 = 2x + x + 2. 140 = 3x + 2 and 138 = 3x. Therefore, x = 46. Multiply it by 2 to get angle B is 92 degrees.
The description should be a vertical line on the negative side on the grid and the vertical line should be placed on the negative 8 on the x axis.
What is this supposed to mean? Is it a chart??

The lengths of the sides of the triangle:

No sides are equal to each other, so it's a scalene triangle.
Check if the sides satisfy the Pythagorean theorem:

They do, so it's a right triangle.
The triangle is a
right scalene triangle.