7.

If m<L= 45 and m<J=65 what is the measure of exterior angle at vertex K?

1 answer

The sum of the measures of the interior angles of a triangle is always 180 degrees.

So, the measure of angle K = 180 - (45+65) = 180 - 110 = 70 degrees.

Therefore, the measure of the exterior angle at vertex K is 70 degrees.