17 Sept 2023

Class 9 | Midpoint Theorem | ABCD is a rhombus with P,Q,R as mid-points of AB, BC and CD. Prove that PQ⊥QR.

 

Class 9 | Midpoint Theorem | ABCD is a rhombus with P,Q,R as mid-points of AB, BC and CD. Prove that PQ⊥QR.

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Summation k=1 to 9 1/k(k+1)(k+2) Class 9/10 IOM

 ANSWER:  276