chewy26
contestada

Can the quadrilateral be a parallelogram if two opposite angles are right angles, but the quadrilateral is not a rectangle?

Respuesta :

rsk2002
Geometry.
If two opposite angles are right angles, then the other angles have to be right angles. So yes, it is a parallelogram. 
bcalle
If the two opposite angles are 90 degrees(right angles) the other two angles must also be right angles. 
If it's not a rectangle it has to be a square.

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