# Formula Trapezoid Height    Angle    Side length

## Height

Unit
Height of the trapezoid, i.e. the distance between the sides $$a$$ and $$b$$.

## Angle

Unit
The angle enclosed by the sides $$c$$ and $$a$$. Alternatively, the trapezoid height can be expressed with the angle $$\beta$$. This is the angle enclosed by the sides $$d$$ and $$c$$:$h ~=~ d \, \sin(\beta)$

## Side length

Unit
Length of the corresponding side of the trapezoid (see illustration). If $$c = d$$, then the trapezoid is isosceles.