# Category:Parallelograms

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This category contains results about **Parallelograms**.

Definitions specific to this category can be found in Definitions/Parallelograms.

A **parallelogram** is a quadrilateral whose opposite sides are parallel to each other, and whose sides *may or may not* all be the same length.

## Subcategories

This category has the following 5 subcategories, out of 5 total.

## Pages in category "Parallelograms"

The following 34 pages are in this category, out of 34 total.

### C

- Complements of Parallelograms are Equal
- Condition for Points in Complex Plane to form Parallelogram
- Construction of Parallelogram Equal to Given Figure Exceeding a Parallelogram
- Construction of Parallelogram Equal to Given Figure Less a Parallelogram
- Construction of Parallelogram equal to Triangle in Given Angle
- Construction of Parallelogram in Given Angle equal to Given Polygon
- Construction of Parallelogram on Given Line equal to Triangle in Given Angle

### D

### L

### P

### Q

- Quadrilateral is Parallelogram iff Both Pairs of Opposite Angles are Equal
- Quadrilateral is Parallelogram iff Both Pairs of Opposite Sides are Equal or Parallel
- Quadrilateral is Parallelogram iff Diagonals Bisect each other
- Quadrilateral is Parallelogram iff One Pair of Opposite Sides is Equal and Parallel
- Quadrilateral with Bisecting Diagonals is Parallelogram