## Answer :

Slopes of AB = 13/12 AD = -2/10 =-1/5 BC = -2/10 = -1/5

CD = -13/-12 = 13/12

AB || CD AD || BC

hence ABCD is a parallelogram

of a parallelogram.

Slopes of AB = 13/12 AD = -2/10 =-1/5 BC = -2/10 = -1/5

CD = -13/-12 = 13/12

AB || CD AD || BC

hence ABCD is a parallelogram