1.

ABCDisparallelogram.Find x, y and z.

Answer»

As AB || DCthus 125°+x=180° (property of parallel lines when cut by a transversal)x=55°

As AD||BCthus x+y+56=180°55°+y°+56°=180°y=69°

And z+y=180° (transversal cutting the two parallel lines and angles on the same side of the transversal sum up to 180 degrees)z+69°=180°z=111°



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