Question

Prove: If the four sides of a quadrilateral are equal, the quadrilateral is a rhombus.


Given:
AB = BC = CD = DA
Prove:
ABCD is rhombus

Which of the following reasons completes the proof in line 2?

Definition of parallelogram.
If both pairs of opposite sides are =, then a parallelogram.
All quadrilaterals are parallelograms

Answer 1

If both pairs of opposite sides are =, then a parallelogram.

Answer 2

thanks