The measure of angle PQR is 50°
The correct option is (A)
What is an arc?
The arc of a circle is defined as the part or segment of the circumference of a circle.
Given that: Arc QR measure 80 degrees.
Now, using theorem
"The measure of inscribed angle is half of the intercepted arc".
So, angle P= 1/2 of QR
= 40°
As, angle R= 90°
Using Angle sum property in Triangle PQ,
P + Q + R =180
40° + PQR +90°=180°
PQR= 50°
Thus, the measure of angle PQR is 50°
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