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They are quadrilaterals; opposite sides are parallel.

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12y ago

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Which property is not true for all parallelograms?

Diagonals are congruent


Is every property of parallelograms also a property of all rectangles?

Yes. All rectangles are also parallelograms, but not all parallelograms are rectangles.


Is it true that rhombuses are special parallelograms?

Yes, it is true that rhombuses are special types of parallelograms. A rhombus is defined as a parallelogram in which all four sides are of equal length. This means that while all rhombuses are parallelograms, not all parallelograms are rhombuses, as parallelograms can have sides of different lengths. Additionally, rhombuses have the property of having diagonals that bisect each other at right angles.


Is true or false all parallelograms are aquares?

All squares are parallelograms, but all parallelograms are not squares.


Parallelograms are squares is that sometimes always or never true?

Parallelograms are squares is sometimes true. Squares are parallelograms is always true. Rhomboids are parallelograms is also always true. So not all parallelograms are squares but some are.


Is not all rectangles are parallelograms true?

not true


Are all parallelograms squares true or false?

False! Squares are parallelograms. Parallelograms can be squares or rectangles or neither.


All rectangles are parallelograms?

True


Is it true that all quadrants are parallelograms?

No.


Are all parallelograms quadrilaterals?

Yes because all parallelograms have four sides. But the opposite is not true. There are some quadrilaterals that aren't parallelograms.


Are some parallelograms rectangles?

It is NOT as case of 'Some'. It is ALL rectangles are parallelograms.


Is it true that all rectangles are parallelograms?

Yes it's true.