Question

1.
In the figure , PQ = PR.L2 LR
Prove that O PQR = DPRT.
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Answer 1

Step-by-step explanation:

Given, in △PQR,PQ=PR

Therefore, △PQR is an isosceles triangle with equal base angles, ∠Q=∠R.

Exterior ∠R=100

o

Therefore, PRQ=80

o

As angles Q and R are equal, ∠PQR=80

o

∠P+∠Q+∠R=180

o

∴∠P=20

o

i.e. ∠QPR=20

o