![Example 12 - Chapter 6 Class 10 Triangles - Part 2](https://d1avenlh0i1xmr.cloudfront.net/0fe64a3c-82cf-46e1-95ad-83d7c0ed2f00/slide32.jpg)
Pythagoras Theoram - Proving
Last updated at April 16, 2024 by Teachoo
Question 4 In figure, if AD BC, prove that AB2 + CD2 = BD2 + AC2. Given: where AD BC To Prove:- AB2 + CD2 = BD2 + AC2 Proof: Since AC BD ADC = ADB = 90 Doing (1) (2) AB2 AC2 = (AD2 + BD2) (AD2 + CD2) AB2 AC2 = AD2 + BD2 AD2 CD2 AB2 AC2 = BD2 CD2 AB2 + CD2 = BD2 + AC2 Hence proved