# Trapezium area calculator

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: km2, m2, cm2, mm2, etc.

1

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

a - base
b - base
h - height

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2

## Trapezium area in height and center line

m - middle line
h - height

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3

## Area of trapezoid on four sides

a - base
b - base
c - side
d - side

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4

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

d1 - diagonal
d2 - diagonal
α° - Angle between diagonals

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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

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6

## Area of an isosceles trapezium through its sides

a - side
b - side
c - side

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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

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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

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9

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

a - base
b - base
α° - angle at base

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10

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

d - diagonal
α° - Angle between diagonals

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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

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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

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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

... preparation ...

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

... preparation ...

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

... preparation ...

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

... preparation ...