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re, AB 11 CD. The line segments BC and AD intersect at O. Show that : z = x +y. |
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Answer» As AB || CD BAO = x° ( corresponding angles)x+y + AOB = 180° ( sum of angles in traingle) z + AOB = 180°180° - z = angle AOBx+y + 180° -z = 180°x+y = z |
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