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The area of the trapezoid, formulas and calculator for calculating the area on-line. Formulas for all types of trapezia and special cases of isosceles trapezia are given.

## Area for all types of trapezoid

1

## The area of the trapezoid in height and in two bases

**a**- base

**b**- base

**h**- height

... preparation ...

2

## Trapezium area in height and center line

**m**- middle line

**h**- height

... preparation ...

3

## The area of the trapezoid on four sides

**a**- base

**b**- base

**c**- side

**d**- side

... preparation ...

4

## The area of the trapezoid along the diagonal and the angle between the diagonals

**d**- diagonal

_{1}**d**- diagonal

_{2}**α**° - Angle between diagonals

... preparation ...

5

## The area of the trapezium through its bases and corners at the base

**a**- base

**b**- base

**α**° - angle at base

**β**° - angle at base

... preparation ...

## The area of an isosceles trapezoid

6

## The area of an isosceles trapezium through its sides

**a**- side

**b**- side

**c**- side

... preparation ...

7

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

**a**- base

**c**- side

**α**° - angle at base

... preparation ...

8

## The 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

... preparation ...

9

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

**a**- base

**b**- base

**α**° - angle at base

... preparation ...

10

## The area of an isosceles trapezium through the diagonals and the angle between the diagonals

**d**- diagonal

**α**° - Angle between diagonals

... preparation ...

11

## The 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

... preparation ...

12

## The 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

... preparation ...

13

## The 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

... preparation ...

14

## The 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

... preparation ...

15

## The 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

... preparation ...

16

## The 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

... preparation ...