Trapezium area calculator - formulas and calculator for calculating area on-line. Formulas for all types of trapezium and special cases of isosceles trapezia are given.

Trapezium area - is a numerical characteristic characterizing the size of a plane bounded by a closed geometric figure formed by four series-connected segments (sides), two of which are parallel to each other.

A trapezoid - is a geometric figure formed by four series-connected segments (sides), two of which are parallel to each other.

Area - is a numerical characteristic characterizing the size of a plane bounded by a closed geometric figure.

Area is measured in units of measurement squared: km^{2}, m^{2}, cm^{2}, mm^{2}, etc.

## Area for all types of trapezoid

1

## Area of the trapezoid in height and in two bases

**a**- base

**b**- base

**h**- height

2

## Trapezium area in height and center line

**m**- middle line

**h**- height

3

## Area of trapezoid on four sides

**a**- base

**b**- base

**c**- side

**d**- side

4

## Area of trapezoid along the diagonal and the angle between the diagonals

**d**- diagonal

_{1}**d**- diagonal

_{2}**α**° - Angle between diagonals

5

## Area of the trapezium through its bases and corners at the base

**a**- base

**b**- base

**α**° - angle at base

**β**° - angle at base

## Area of an isosceles trapezoid

6

## Area of an isosceles trapezium through its sides

**a**- side

**b**- side

**c**- side

7

## Area of an isosceles trapezium through a small base, side and angle at a larger base

**a**- base

**c**- side

**α**° - angle at base

8

## Area of an isosceles trapezium through a larger base, lateral side and angle with a larger base

**b**- base

**c**- side

**α**° - angle at base

9

## Area of an isosceles trapezium through the bases and the angle at the base

**a**- base

**b**- base

**α**° - angle at base

10

## Area of an isosceles trapezium through the diagonals and the angle between the diagonals

**d**- diagonal

**α**° - Angle between diagonals

11

## Area of the isosceles trapezium through the middle line, the side and the angle at the base

**m**- middle line

**c**- side

**α**° - angle between parties

12

## Area of an isosceles trapezoid along the radius of the inscribed circle and the angle between the sides

This formula is applicable only to isosceles trapezoids, into which a circle can be inscribed.

**r**- radius of inscribed circle

**α**° - angle between parties

13

## Area of an isosceles trapezium through its two bases and the radius of the inscribed circle

This formula is applicable only to isosceles trapezoids, into which a circle can be inscribed.

**a**- base

**b**- base

**r**- radius of inscribed circle

14

## Area of an isosceles trapezium through its bases and angle at a larger base

This formula is applicable only to isosceles trapezoids, into which a circle can be inscribed.

**a**- base

**b**- base

**α**° - angle at base

15

## Area of an isosceles trapezium through the sides

This formula is applicable only to isosceles trapezoids, into which a circle can be inscribed.

**a**- base

**b**- base

**c**- side

16

## Area of the isosceles trapezium through the bases and the midline

This formula is applicable only to isosceles trapezoids, into which a circle can be inscribed.

**a**- base

**b**- base

**m**- middle line