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Question -

In the figure, POS is a line, find x.



Answer -

In the figure, POS is a line
тИ┤ тИаPOQ + тИаQOS = 180┬░ (Linear pair)
тЗТ тИаPOQ + тИаQOR + тИаROS = 180┬░
тЗТ 60┬░ + 4x + 40┬░ = 180┬░
тЗТ 4x + 100┬░ тАУ 180┬░
тЗТ 4x = 180┬░ тАУ 100┬░ = 80┬░
тЗТ x =┬а=20┬░
тИ┤ x = 20┬░

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