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## How many right angles does a parallelogram have?

A parallelogram with one right angle is a parallelogram with 4 right angles, also known as a rectangle. The each pair of equal length sides must be adjacent. All you know is that the figure has four sides. Hence, it is a general quadrilateral.

### Does parallelogram have 4 angles of equal measure?

A Parallelogram can be defined as a quadrilateral whose two s sides are parallel to each other and all the four angles at the vertices are not 90 degrees or right angles, then the quadrilateral is called a parallelogram. The opposite sides of parallelogram are also equal in length. Opposite sides of parallelogram are equal (AB = DC).

**What is always true about a parallelogram?**

It is always true. A parallelogram is a quadrilateral where opposite sides are parallel. So a quadrilateral ABCD is a parallelogram if and only if AB is parallel to DC, and BC is parallel to AD. The angles between side AB and adjacent sides AD and BC are supplementary (their measures add up to .

**Do parallelogram always have 4 sides?**

IF a parallelogram has 4 equal sides, then it is a rhombus. All parallelogram rules apply plus the diagonals are perpendicular bisectors of each other. IF it has both equal sides and all 90 degree angles, then it is a square which has all the properties of parallelograms, rhombii, and rectangles.

A parallelogram is a quadrilateral with 2 pair of opposite sides parallel. A rectangle is a special parallelogram that has 4 right angles. However, a trapezoid could have one of the sides connecting the two parallel sides perpendicular to the parallel sides which would yield two right angles.

## When is a four-sided figure not a parallelogram?

In a parallelogram, if one of the angles is a right angle, all four angles must be right angles. If a four-sided figure has one right angle and at least one angle of a different measure, it is not a parallelogram; it is a trapezoid.

### How many right angles does a rectangle have?

A rectangle has two pairs of opposite sides parallel, and four right angles. It is also a parallelogram, since it has two pairs of parallel sides. With that being said, how many right angles are in a parallelogram? Parallelogram: A quadrilateral with 2 pairs of parallel sides. Rectangle: A parallelogram with 4 right angles.

**Which is a quadrilateral with four right angles?**

Rectangle: A quadrilateral with four right angles; a rectangle is a type of parallelogram. Square: A quadrilateral with four congruent sides and four right angles; a square is both a rhombus and a rectangle. Trapezoid: A quadrilateral with exactly one pair of parallel sides (the parallel sides are called bases)