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CBSE Class 9 Answered

Please solve question no 11 with proper explanation 
Asked by adityaahuja099 | 28 Nov, 2017, 05:45: PM
answered-by-expert Expert Answer
begin mathsize 16px style Construction colon space Join space AB In space increment ACB comma AC squared plus BC squared equals AB squared............ left parenthesis 1 right parenthesis Also comma In space increment ADB comma AD squared plus BD squared equals AB squared........... left parenthesis 2 right parenthesis From space left parenthesis 1 right parenthesis space and space left parenthesis 2 right parenthesis AC squared plus BC squared equals AD squared plus BD squared If space BD equals AC space rightwards double arrow BC equals AD Also space BC parallel to AD space and space BD parallel to AC Hence comma space ABCD space is space straight a space rectangle. end style
Answered by Sneha shidid | 29 Nov, 2017, 10:06: AM

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CBSE 9 - Maths
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