Join Sarthaks eConnect Today - Largest Online Education Community!
0 votes
asked in Mathematics by (159k points)

In a quadrilateral ABCD, ∠B = 90°, AD2 = AB2 + BC2 + CD2, prove that ∠ACD = 90°.

1 Answer

0 votes
answered by (215k points)
selected by
Best answer

Then, AD2 = AC2 + 2
By converse of by pythagoras theorem
∠ACD = 90°

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

One Thought Forever

“There is a close connection between getting up in the world and getting up in the morning.“
– Anon