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A parallelogram always has opposite sides of equal length.

Its 4 angles may be right angles, but in most parallelograms they're not.

If they are, then that parallelogram is also called a 'rectangle'.

Q: Does a paralellelogram have 4 right angles and opposite sides of equal lenghth?

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yes opposite angles are equal

A parallelogram has 2 equal opposite acute angles and 2 equal opposite obtuse angles.

Yes, the opposite angles in a regular quadrilateral are equal.

Yes, opposite angles in a parallelogram must be equal.

Opposite angles of a parallelogram are equal.

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yes opposite angles are equal

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A parallelogram has 2 equal opposite acute angles and 2 equal opposite obtuse angles.

It has one pair of opposite angles that are equal but not two.

A square and a rectangle have opposite equal 90 degree angles. A parallelogram and a rhombus have 2 opposite equal acute angles and 2 opposite equal obtuse angles.

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Opposite angles of a parallelogram are equal.

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A rhombus has 4 interior angles and opposite angles are equal

Equal opposite angles.