In quadrilateral ABCD, angle B space equals space 90 degree. If AD2 = AB2 + BC2 + CD2. Prove that angle A C D space equals space 90 degree.

Asked by Topperlearning User | 26th Jul, 2017, 01:58: PM

Expert Answer:

Answered by  | 26th Jul, 2017, 03:58: PM