Question

9 PQRS is a rectangle with PQ = 2 PS. T is a mid point of PQ.
What is the measure of angls STR?
A. 45°
B. 60°
C. 90
D. 120°
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Answer 1

Answer:

Step-by-step explanation:

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Answer 2

Answer:

C. 90°

Step-by-step explanation:

If we look at triangle PST,

PS = PT and angle P = 90°

hence, angle PTS = 45°

Similarly, in triangle QRT,

QR = QT and angle Q = 90°

hence, angle QTR = 45°

We know that

angle PTS+angle STR+angle QTR=180°

45°+45°+angle STR = 180°

Hence, angle STR = 180-90 = 90°