Question

Theorem: If the diagonals of a parallelogram are congruent, then each angle of the parallelogram is a right angle.

Kim is writing the proof of the theorem using the properties of a parallelogram shown below.

• The opposite sides of a parallelogram are parallel.
• The opposite sides of a parallelogram are congruent.

A parallelogram ABCD with diagonals AC and BD.

She proved the theorem by showing that triangle ADC is congruent to triangle CBA using the _________ Postulate.

Answer 1

Let me read hmmm

Answer 2

Side angle side?

Answer 3

SAS

Answer 4

Is that what your looking for?

Answer 5

i think so thank-you!

Answer 6

Best answer medal? :P

Answer 7

yep he is right.

Answer 8

haha! theres your medal =)

Answer 9

Thanks lol

Answer 10

mhmm np haha

Answer 11

I think its SSS....
• The opposite sides of a parallelogram are parallel.
• The opposite sides of a parallelogram are congruent.
they are both talking about sides.............

Answer 12

nvr mind, I found the angle
Theorem: If the diagonals of a parallelogram are congruent, then each angle of the parallelogram is a right angle.
So I concure with them lol