Online Interactive Trapeze

Interactive trapeze calculator

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

Scale:

Number of digits =

Side length

Diagonal length

Angle in radians

Angle in degree

Circumference

Area

Trapeze 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 °.

Trapeze circumference

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

$U = 2 a + 2 b$

Trapeze area

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

$F = a \cdot b \cdot \sin α$

Length of the trapeze diagonals

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

$d_{1} = \sqrt{a^{2} + b^{2} - 2 a b \cos (α)}$

$d_{2} = \sqrt{a^{2} + b^{2} + 2 a b \cos (α)}$

Screenshot of the Image

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More Calculators

Here is a list of of further useful graphical calculators:

Index Triangle Circle Ellipse Parallelogram Rectangle