trinagle LMN has verticies L (-2,3) M (5,-7) and N (-8,-3) under a translation point L is moved to L(6,0) under the same translation where would point m be located

can you help me with an archeologist is collecting measurement for an ancient pyramid with a square base she knows the height is 147 meters and the length of each side of the base is 230 meters to the nearest tenth of a degree what is the measure of the angle marked in the pyramid