Question
If ΔABC≅ΔPQR and it is given that ∠A=60∘, ∠B=70∘. Then the value of ∠R is___ ∘.
Answer: Option A
:
If ΔABC≅ΔPQR,∠A=∠P=60∘∠B=∠Q=70∘Now, ∠P+∠Q+∠R=180∘(angles of a triangle)⇒60∘+70∘+∠R=180∘⇒∠R=50∘
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If ΔABC≅ΔPQR,∠A=∠P=60∘∠B=∠Q=70∘Now, ∠P+∠Q+∠R=180∘(angles of a triangle)⇒60∘+70∘+∠R=180∘⇒∠R=50∘
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