Question

If ABCD is a parallelogram, which of the following statements must be true? (

Answer 1

AB = CD, BC = AD

Explanation:

According to parallelogram properties,

Angle A = 180-Angle B; False
AB!=BC; False

AC==BD is only true when AB = BC, False
AB ==CD, BC == AD; True

Answer 2

AB=CD and BC=AD because both of them are visually paired with the same longitude.