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The definition of a parallelogram is that it's a quadrilateral in which both pairs of opposite sides are parallel. So, that part is true about all parallelograms. Apart from that, there are some other properties that can be deduced, such as:
* Opposite sides are congruent
* Opposite angles are congruent
* The diagonals bisect one another
* The sum of the squares of the sides equal the sum of the squares of the diagonals
As well as some other properties.
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∙ 9y ago
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Are all parallelograms squares true or false?
False! Squares are parallelograms. Parallelograms can be squares or rectangles or neither.
All rectangles are parallelograms?
True
Which property is not true for all parallelograms?
Diagonals are congruent
Is it true that in all quadrilaterals the opposite sides are in equal length?
No. This is only true of parallelograms.
Are all trapezoids parallelograms true or false?
False but they are both 4 sided quadrilaterals
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?
In fact, some are rectangles, but not all are.
Is it true that all rectangles are parallelograms?
Yes it's true.
There are some parallelograms which are not rectangles true or false?
yes. rectangles are just the special cases of parallelograms where the angles are all 900
Are all rectangles parallaelgrams?
All rectangles are parallelograms.
Which is not true for all parallelogram?
The sentence "this shape has five sides" is not true for all parallelograms.
