Question

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

https://media.glynlyon.com/g_geo_2013/4/page86c.gif

Given:
AB = BC = CD = DA

Prove:
ABCD is rhombus

https://media.glynlyon.com/g_geo_2013/4/page87a.gif

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

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

Answer 1

@CGGURUMANJUNATH
@elementwielder
@Somy

Answer 2

sadly i dunno this T_T

Answer 3

thnx 4 trying