The measure of ∠JLM is 140°. The measure of ∠JKL is 75°. What is the measure of ∠KJL?
Now, we must use the angles properties of triangles. You can learn more about them here. For this problem, we can use the fact that all the interior angles of a triangle must equal 180˚.
Then, we substitute in the values we know.
Because we are looking for