Question

HOW TO PROVE A PARALLELOGRAM TO BE A
"RHOMBUS"

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Answer 1

parallelogram = it has 4 sides

opposite angles are equal

opposite sides are equal and parallel

rhombus = it has 4 sides

all sides are equal

opposite angles are equal

these are the similarities

hope my answer will help you

Answer 2

only prove that all its sides are equal u would be able to prove a parallelogram as a rhombus.