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Opposite angles/sides are equal.
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∙ 15y ago
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Do all parallelograms have at least one right angle?
The simple answer is no, not all parallelograms have at least one right angle. However, there are some that do. Rectangles and squares are 'special' parallelograms that all have at least one right angle.
Which property is not true for all parallelograms?
Diagonals are congruent
What is transitive property of congruence?
The transitive property is if angle A is congruent to angle B and angle B is congruent to angle C, then angle A is congruent to angle C.
Do all parallelograms have at least one obtuse angle?
Most do, but a square or rectangle is a special case and has all right angles.
What is the Symmetric Property of Congruence?
The Symmetric Property of Congruence: If angle A is congruent to angle B, then angle B is congruent to angle A. If X is congruent to Y then Y is congruent to X.
Do all parallelograms have at least one right angle?
The simple answer is no, not all parallelograms have at least one right angle. However, there are some that do. Rectangles and squares are 'special' parallelograms that all have at least one right angle.
Is every property of parallelograms also a property of all rectangles?
Yes. All rectangles are also parallelograms, but not all parallelograms are rectangles.
What do some parallelograms not have?
A right angle.
How much does a parallelograms angle add up to?
360
What parallelogram has a right angle?
Rectangles are parallelograms with right angles.
Why are some parallelograms rectangles?
If a parallelogram has a right angle it is a rectangle.
Which property is not true for all parallelograms?
Diagonals are congruent
What type of angle is not a parallelogram?
The questions doesn't make sense. An angle isn't a parallelogram. Parallelograms are types of shapes while an angle are to rays.
AreThere are some parallelograms which are not rectangles?
Many. If there is no right angle it's not a rectangle...
Why are squares shown inside rectangles and parallelograms?
usually its for marking a right angle
What property is true of all parallelograms?
They are quadrilaterals; opposite sides are parallel.
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.
