That's a square.
I think it would be enough to say one right angle and four congruent sides.
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A parallelogram with no right angles and four congruent sides is a Rhombus.
Rhombus. Because a Rhombus has four congruent sides but no right angles.
A rhombus.
A rhombus has four congruent sides. The angles don't matter, but if they're right angles, then the rhombus is a square.
rectangle