Find the measure of ∠P and ∠S, if SP || RQ in the figure

CBSE Class 8 CBSE Class 8 Maths
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Find the measure of ∠P and ∠S, if \overline { SP } || \overline { RQ } in the figure. (If you find mZ R, is there more than one method to find m∠P ?)
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