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In Fig, 6.28, find the valucs of r and y and thenshow that AB||CD.50°130°Fig. 6.28 |
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Answer» x+50 = 180°..... ( linear pair)so, x = 180-50 = 130° and y = 130° ... ( vertically opposite angle) and since x = y ,forms alternate interior angles .. so, AB || CD |
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