Question

Find angle PQR
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Answer 1

angle R is 90°because this is a right angle ok

this is use ful for you

Answer 2

Here, SQR is a straight line.

We know that, if the angle formed by a straight line is 180

o

.

Then,

∠SQT+∠TQP+∠PQR=180

0

Substituting the values,

⟹ x+70

o

+20

o

−x+∠PQR=180

0

⟹ 90

0

+∠PQR=180

0

.

So we get,

∠PQR=180

0

−90

0

=90

0

.