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A Parallelogram is a flat shape with opposite sides parallel and equal in length.

Play with a Parallelogram:

images/geom-quad.js?mode=parallelogram

NOTE: Squares, Rectangles and Rhombuses are all Parallelograms!

Example:

A parallelogram where all angles are right angles is a rectangle!

Area of a Parallelogram

The Area is the base times the height:

Area = b × h

( h is at right angles to b)

Example: A parallelogram has a base of 6 m and is 3 m high, what is its Area?

Area = 6 m × 3 m = 18 m²

Perimeter of a Parallelogram

The Perimeter is the distance around the edges.

The Perimeter is 2 times the (base + side length):

Perimeter = 2(b+s)

Example: A parallelogram has a base of 12 cm and a side length of 6 cm, what is its Perimeter?

Perimeter = 2 × (12 cm + 6 cm) = 2 × 18 cm = 36 cm

Diagonals of a Parallelogram

The diagonals of a parallelogram bisect each other.

In other words the diagonals intersect each other at the half-way point.

Inside Any Quadrilateral

And there is a parallelogram in any quadrilateral.

9121, 9122, 9123, 9124, 9125, 9126, 9127, 9128, 9129, 9130

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Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

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I have all of the properties of the parallelogram AND the rectangle AND the rhombus.

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I have all of the properties of the parallelogram PLUS

4 congruent sides

Diagonals bisect angles

Diagonals are perpendicular

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I have all of the properties of the parallelogram PLUS

4 right angles

Diagonals are congruent

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Properties of Parallelogram | Learn with BYJU'S

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Properties:

Exactly 2 pairs of parallel sides

Exactly 2 pairs of congruent sides

Both pairs of opposite angles are congruent

Consecutive angles are
supplementary

Diagonals bisect each other