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## Answers

1) opposite angles of a rectangle are equal.

2) the sum of two adjcent angles of rectangle is equal to 180*

Let's assume...

In rectangle ABCD

*we know that angle A and angle B are two adjacent angles whose sum is equal to 180* ...i.e...A=B=90**

and angle A and angle D are equal acc... to property no..1 and angle B and C are equal too...

Thus,angles A=B=C=D=90 which is right angle...