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in Geometry by (15 points)
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In the figure pqr is a straight line find x and the complete aqb,bqb,aqr

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1 Answer

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In the given fig, ∠PQA, ∠AQB and ∠BQR forms  a linear pair.

Therefore,

∠PQA + ∠AQB + ∠BQR = 180º

(x + 20º) + (2x + 10º) + (x - 10º) = 180º

4x + 20º = 180º

\(\Rightarrow\) x = \(\frac{180^o-20^o}{4}\) = 40º

Therefore,

∠AQB= 2x + 10º = 2 x 40º + 10º = 90º

∠BQP = (x + 20º) + (2x + 10º) = 3x + 30º = 3 x 40º + 30º = 150º

∠AQR = (2x+10°)+(x−10°)=3x=3×40°=120°

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