Pqrs is a rhombus. Diagonals pr and qs intersect at o. Prove that all 4 triangles so formed are congruent. With proper and step by step .
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letABCDis a rhombus whose all side are equal and AC⊥BD
∠AOB=∠AOD=∠COD=∠COB=90
InΔABCandΔCBO
⇒AB=BC
⇒AO=CO
⇒∠BOA=∠BOC=90
by SAS criteria ΔABO is congurent to ΔCBO
Simillary Inrighttriangle AOD and COD
⇒AD=DC
⇒∠AOD=∠COD=90
⇒∴AO=AD
∴ΔAOD is congruent to ΔCOD
Hence,allfourtriangles are congruent.
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