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# What parallelograms have 4 right angles?

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## Related Questions

###### Asked in Geometry

### Does a parallelogram have a right angle?

a parallelogram is a 4 sided polygon with two pair of parallel
sides. So squares and rectangles are parallelograms since they have
2 pair of parallel sides and yes they have right angles, BUT most
parallelograms do not have right angles. So the answer is it may
have them, but does not need to have them

###### Asked in Math and Arithmetic, Algebra, Geometry

### Does a paralellogram have a right angle?

a parallelogram is a 4 sided polygon with two pair of parallel
sides. So squares and rectangles are parallelograms since they have
2 pair of parallel sides and yes they have right angles, BUT most
parallelograms do not have right angles. So the answer is it may
have them, but does not need to have them

###### Asked in Geometry, Math and Arithmetic

### What is true of rectangles that isn't true of parallelograms in general?

All rectangles have 90 degree angles and with parallelograms
that does not always have to be the case. But no matter what in
order for a parallelogram to be a rectangle the angles have to all
be 90 degrees.
Rectangles are special cases of parallelograms. They have all the
properties of parallelograms, and in addition, all their internal
angles are right-angles - 90° angles.

###### Asked in Math and Arithmetic, Geometry

### Why does a parallelogram have two pairs of parallel sides?

That is how it is defined: parallelograms have two sides that
have congruent adjacent angles, so that the remaining two sides
must be parallel and equal in length.
Parallelograms include rectangles (all right angles), squares
(all right angles), rhomboids, and rhombi (the latter two have
congruent but non-right angles, and a rhombus has 4 equal
sides).