# Online Interactive parallelogram

## Interactive parallelogram calculator

Move the points in the grafic or define the point coordinates in the numeric field.

Scale:
Number of digits =

Point coordinates x, y

A =
B =
C =

Axes ranges

x-min=
x-max=
y-min=
y-max=

## Parallelogram properties

The opposite sides are the same. The opposite sides are parallel. The diagonals halve each other. Opposite angles are equal. Two adjacent angles together result 180 °.

### Parallelogram circumference

With the side length a = AB = CD und b = BC = DA result the circumference:

$U=2a+2b$

### Parallelogram area

With the side length a and b and the angle α is the area:

$F=a\cdot b\cdot \mathrm{sin}\alpha$

### Length of the parallelogram diagonals

With the side lengths a and b the length of the diagonals is given by:

${d}_{1}=\sqrt{{a}^{2}+{b}^{2}-2ab\mathrm{cos}\left(\alpha \right)}$

${d}_{2}=\sqrt{{a}^{2}+{b}^{2}+2ab\mathrm{cos}\left(\alpha \right)}$

### Screenshot of the Image

Print or save the image via right mouse click.

## More Calculators

Here is a list of of further useful graphical calculators:

Index Trigonometric calculations Triangle Circle Ellipse Rectangle