D is the mid point of sides BC of triangle ABC and angle ABD = 50. If AD=BD=DC, then find measure of angle ACD.

2021/10/21 13:12 96 In figure, D is the mid-point of side BC of a triangle ABC and angle ABD=50^ . If AD = BD = CD , then find the measure of angle ACD . 50° B (af 30° b) 70 degrees c) 80° d) 40 degrees