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290* 70
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The sum of all angles in a quadrilateral is 360⁰
Hence in quad PQRS,
<P + <Q + <R + <S = 360
→ 90 + <Q + 90 + <S= 360 [ <P and <R are right
angles as given in
the pic ]
→ 180 + ( <Q + <S ) = 360
→ <Q + <S = 360 - 180
= 180
Therefore , the sum of angles Q and S should be 180⁰ , so options 1 , 2 and 4 are wrong.
The correct answer is option 3. Which is 115⁰ and 65⁰ ( since their sum is 180⁰)
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