AD is the median of triangle ABC on base BC if angle ADC=90 degrees....Prove that triangle ABC is an isosceles triangle. Share with your friends Share 0 Priyanka Kedia answered this Refer the following link: https://www.meritnation.com/ask-answer/question/ad-is-the-median-of-triangle-abc-on-base-bc-if-angleadc-90d/congruence-of-triangles/3240105 -1 View Full Answer