Question

In ΔPQR, if PQ = QR, then which of its angle are equal?
fast please

Answer 1

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Let ∠R=x

It has been given that PQ=QR

∠R=x=∠P

Now in triangle POR

∠P+∠Q+∠R=180

o

...Angle sum property

⟹x+100

o

+x=180

o

⟹2x=80

o

⟹x=40

o

Therefore, ∠R=40

o