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Prove: Quadrilateral ABCD is a parallelogram
PLEASE HELP

Prove Quadrilateral ABCD Is A Parallelogram PLEASE HELP class=
Prove Quadrilateral ABCD Is A Parallelogram PLEASE HELP class=

Sagot :

The proof is shown below:

What is a parallelogram?

A parallelogram is a quadrilateral with opposite sides parallel (and therefore opposite angles equal).

As,

<A= 104

<B= 76

As AB || CD,

<A + <D =180

104 + <D =180

<D = 76

and <B + <C =180

76 + <C = 180

<C = 104.

As, opposite angles are equals and  AB || CD.

Hence, ABCD is a parallelogram.

For 2 part,

Use m<A = 104° and m<B= 76° to show that <A and <B are same-side interior angles. Then, use AB || CD to show that <A and <D are supplementary angles.

learn more about parallelogram here:

https://brainly.com/question/23488153

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