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Q: How many angles must measure 90 degrees in a parallelogram?

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If it is a rectangle, then all its angles are 90 degrees and it is a parallelogram!

one or 1

A parallelogram has 4 sides and 4 interior angles that add up to 360 degrees

A parallelogram has 4 interior angles that add up to 360 degrees

360 degrees. This complies with the rules of parallelograms. A parallelogram is a quadrilateral comprised of two sets of parallel lines. The opposite sides of a parallelogram are congruent, meaning that they have the same shape and size. The opposite angles are also congruent. Additionally, its consecutive angles are supplementary. This means that when when you add the two angles next to each other together, they will add up to 180 degrees, or a straight line. Since there are 4 corners in a parallelogram, and therefore 4 angles, you would have two sets of 180 degrees. Ergo, the angles in a parallelogram always add up to 360 degrees.

Related questions

The 4 angles in a parallelogram add up to 360 degrees.

A parallelogram has four interior angles that add up to 360 degrees

If it is a rectangle, then all its angles are 90 degrees and it is a parallelogram!

A parallelogram has 4 interior angles that add up to 360 degrees

A parallelogram has four interior angles that add up to 360 degrees

A parallelogram, in general, has no right angles.

The sum of all the angles in a parallelogram is 360°.

one or 1

A parallelogram has 4 sides and 4 interior angles that add up to 360 degrees

A rectangle has 4 interior angles each measuring 90 degrees

4 and they add up to 360 degrees

A parallelogram has 4 interior angles that add up to 360 degrees

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