Triangles ABC and KLM are equal. It is known that the angle A = 20 degrees, the angle L = 40 degrees, the angle

Triangles ABC and KLM are equal. It is known that the angle A = 20 degrees, the angle L = 40 degrees, the angle M = 120 degrees. find the rest of the corners of these triangles.

Since triangles ABC and KLM are equal, then their angles are also equal:
angle A = angle K;
angle B = angle L;
angle C = angle M.
Thus, in triangle ABC, angle A = 20 degrees (by condition), angle B = angle L = 40 degrees, angle C = angle M = 120 degrees.
In the KLM triangle, angle K = angle A = 20 degrees, angle L = 40 degrees (by condition), angle M = 120 degrees (by condition).
Answer: angle B = 40 degrees, angle C = 120 degrees, angle K = 20 degrees.