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If two opposite angles of a parallelogram are (63-3x) and (4x-7) find all angles of a parallelogram

Posted by Sameer Sharma 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Anurag Tiwari 7 years, 10 months ago

This is a parallelogram so the oppo. Angles are equal this. (4x-7) = (63-3x) 4x+3x = 63+7 7x = 70 x = 70/7 x= 10 So (4x-7) = 33° now as we know oppo. Angles are equal so (63-3x) is also 33° Now in a parallelogram sum of co-interior angles is 180° so 33°+Angle 2 = 180° Angle 2 = 180-33 = 147. Now angle 2 is equal to angle 4 so both are 147°. If you have any more questions post them I will certainly reply.

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