CBSE Class 10 Answered
In quadrilateral ABCD,
If AD2 = AB2 + BC2 + CD2. Prove that ![angle A C D space equals space 90 degree.](http://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=190096639fb71304b2af62f26f6d08b2.png)
![angle B space equals space 90 degree.](http://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=c351e88b636847bb12fcf7393abef07e.png)
![angle A C D space equals space 90 degree.](http://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=190096639fb71304b2af62f26f6d08b2.png)
Asked by Topperlearning User | 26 Jul, 2017, 13:58: PM
Answered by | 26 Jul, 2017, 15:58: PM
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