no
They just have to have four sides the same length and the oppsite line segments must be parallel.
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Yes a square always has 4 right angles but a rhombus never has any right angles.
a rhombus is a parallelogram with no right angles.
Not all of them have 4 right angles for example a rhombus does not have any right angles, yet it is still a parellegram so parellegrams don't always need to have 4 right angles.
If the rhombus is a square, it has 4 right angles. otherwise, no.
A rhombus has no right angles at its vertices but its diagonals are perpendicular to each other forming 4 right angles.