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All parallelograms do not have 90 degree angles. Those that do are called rectangles, a special subgroup within the term.
All that is required of a parallelogram is that opposite sides are parallel. Another special case of parallograms is the rhombus, a parallelogram with 4 equal sides but no right angles.
A parallelogram is a 4-sided polygon where the opposite sides are parallel. A rectangle is a type of parallelogram, but it has the added requirement that all angles are right angles (90°).
Sometimes the term parallelogram is used to indicate that a regular quadrilateral is not a rectangle, but has two pairs of identical angles.
Rectangle is "a parallelogram with one right angle", (which means all angles are right)
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∙ 10y ago
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Can a parallelogram be a rectangle and a square?
the three special quadrilaterals that can be a parallelogram are a rectangle, a square, and a rhombus Actually, this is incorrect. All squares are rectangles. All rectangles are parallelograms. Therefore all squares are parallelograms. But not all parallelograms are rectangles. And not all rectangles are squares.
All parallelograms are rectangles?
False
All rectangles are parallelograms?
True
All rectangles are?
parallelograms and,or quadrilaterals
Are all parallelograms squares true or false?
False! Squares are parallelograms. Parallelograms can be squares or rectangles or neither.
Are some parallelograms rectangles?
In fact, some are rectangles, but not all are.
Which shapes have 2 different pairs of equal sides?
parallelograms, and rectangles (parallelograms)
Are all rectangles parallelagrams?
Yes, all rectangles are parallelograms. However, not all parallelograms are rectangles.
Are all parrellelograms rectangles?
No. Only some parallelograms are rectangles. But all rectangles are parallelograms.
Are there some parallelograms that are rectangles?
All rectangles are parallelograms, so yes there are some.
Can a parallelogram also be a rectangle?
Some parallelograms are rectangles; all rectangles are parallelograms.
Is every property of parallelograms also a property of all rectangles?
Yes. All rectangles are also parallelograms, but not all parallelograms are rectangles.
Is there a rectangle that isn't a parallelogram?
No. All rectangles are parallelograms. However, not all parallelograms are rectangles.
All rectangles are parallelograms. are all parallelograms rectangles explain.?
All parallelograms are not rectangles. The angles of a parallelogram need not be right angles and so the figure need not be a rectangle.
Are all parallelograms and rectangles the same?
No. Rectangles are parallelograms with all right angles, while parallelograms just have 2 sets of parallel lines.
Can parallegrams be rectangle?
Yes: PARALLELOGRAMS can be rectangles. The difference is that rectangles must have one right angle, so not all parallelograms are rectangles, but all rectangles are parallelograms, by defiinition. Parallegram doesn't define anything in the English vocabulary.
What parallelograms are not rectangles?
rhombuses
