Q: What is the name of a parallelogram with four right angles?

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All four of the angles of a rectangle (and of squares) are right angles.(Its name comes from this : rect-angle.)

A rectangle has 4 right angles

A rectangle has 4 right angles

A rectangle.

A rectangle. Since it has two pairs of lines of identical length, then there is no way to have one right angle without all four being right angles (unless you change the lengths and then it is not a parallelogram). If you have four right angles, then you have a rectangle.

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A parallelogram with 4 equal right angles is a rectangle.

square

4 right angles, by definition, are four angles of the same measure, and therefore must be congruent angles.

A rectangle is also a polygon, a parallelogram, and a quadrilateral with four right angles.

All four of the angles of a rectangle (and of squares) are right angles.(Its name comes from this : rect-angle.)

A rectangle has 4 right angles

A rectangle has 4 right angles

A rectangle. Since it has two pairs of lines of identical length, then there is no way to have one right angle without all four being right angles (unless you change the lengths and then it is not a parallelogram). If you have four right angles, then you have a rectangle.

A rectangle.

It's a rectangle. A rectangle has four right angles, but only two pairs of equal sides.

trapeziums,kites,rectangles,parallelogramsHere are a few that I could think of:(quadrilateral: polygon with four sides)parallelogram: quadrilateral with both pairs of opposite sides paralleltrapezoid: quadrilateral with just one pair of opposite sides parallelrectangle: parallelogram with four right anglesrhombus: parallelogram with four congruent sidessquare: parallelogram with four right angles and four congruent sides

No parallelogram can have only one right angle. The consecutive angles of a parallelogram must be supplementary, meaning they must add up to 180. 180-90=90, so all the angles must be right angles.