Question

(Does anyone get this?) Given: A rhombus is a quadrilateral with 4 congruent sides.
Prove: If quadrilateral ABCD does not have 4 congruent sides, then it is not a rhombus.

Determine the first step to prove this statement using proof by contradiction.

A.Assume ABCD does not have 4 congruent sides and is a rhombus.
B.Assume ABCD has 4 congruent sides and is not a rhombus.
D.Assume ABCD is not a rhombus.

Answer 1

For proof by contradiction, first step wud be "assuming the opposite of wat u want to preove"

Answer 2

since you want to prove it is not a rhombus, start by assuming the opposite of it : "it is a rhombus"

Answer 3

I got A. Thanks.(-: