How To Prove That Opposite Sides Are Parallel In Parallelogram?


2 Answers

Oddman Profile
Oddman answered
You don't need to prove it. A parallelogram is defined that way. If they are not parallel, it is not a parallelogram.
aastha sharon Profile
aastha sharon answered
Suppose in a parallelogram ,the sides are given A B C D so we'll divide it into 2 triangles ABC ad ADC so in triangles ABC ad ADC,we have AB||DC i.e AB=DC AC=AC (common) then AD||BC so,AD=BC now, AB||DC and AD||BC..therefore all sides are parallel in a parallelogram.

Answer Question