Triangle area 21 ways

The triangle area calculator online will describe in detail how to find the area of any triangle.

Various formulas for calculating the area of triangles will tell you how to do it yourself or just enter the data of your triangle and get a detailed solution with the answer.

Calculator
Instruction
Theory
History
Report a problem

Выберите тип треугольника

Способ расчета площади треугольника

Side A: Side B: Side c:

A right triangle is a triangle in which one angle is straight (is 90 degrees).
Triangle area formula: The formula for the area of a right triangle on two legs where a, b are the legs.

A right triangle is a triangle in which one angle is straight (is 90 degrees).
Triangle area formula: The formula for the area of a right triangle through the hypotenuse and angle where c is the hypotenuse, α is the angle between the hypotenuse and the cathet.

A right triangle is a triangle in which one angle is straight (is 90 degrees).
Triangle area formula: The formula for the area of a right triangle through the cathet and angle where b is the cathet, α is the angle between the hypotenuse and this cathet.

A right triangle is a triangle in which one angle is straight (is 90 degrees).
Triangle area formula: The formula for the area of a right triangle along segments, on the hypotenuse from the inscribed circle where d and e are segments on the hypotenuse formed as a result of an inscribed circle.

A right triangle is a triangle in which one angle is straight (is 90 degrees).
Triangle area formula: The formula for the area of a right triangle Through the hypotenuse and the inscribed circle where c is the hypotenuse,r is the radius of the inscribed circle.

A right triangle is a triangle in which one angle is straight (is 90 degrees).
Triangle area formula: $The formula for the area of a right triangle On three sides (Heron\'s formula)$ where p is a semiperimeter: $The formula for the area of a right triangle On three sides (Heron\'s formula)half-meter$

An isosceles triangle is a triangle in which two sides are equal in length. Equal sides are called lateral, and the other is called the base.
Triangle area formula: The formula for the area of an isosceles triangle On the sides and base where a is equal sides, c is the third side.

An isosceles triangle is a triangle in which two sides are equal in length. Equal sides are called lateral, and the other is called the base.
Triangle area formula: The formula for the area of an isosceles triangle On the side, base and angle between them where a is the side, c is the base, α is the angle between them in degrees.

An isosceles triangle is a triangle in which two sides are equal in length. Equal sides are called lateral, and the other is called the base.
Triangle area formula: The formula for the area of an isosceles triangle at the base and the angle between the sides where c is the base, α is the angle between the sides in degrees.

An isosceles triangle is a triangle in which two sides are equal in length. Equal sides are called lateral, and the other is called the base.
Triangle area formula: The formula for the area of an isosceles triangle In height and base where c is the base, h is the height.

An equilateral triangle is a triangle with all sides equal to each other.
Triangle area formula: The formula for the area of an equilateral triangle On the side where a - side of a triangle.

An equilateral triangle is a triangle with all sides equal to each other.
Triangle area formula: Formula for the area of an equilateral triangle In height where h is the height of the triangle.

An equilateral triangle is a triangle with all sides equal to each other.
Triangle area formula: Formula for the area of an equilateral triangle Along the radius of an inscribed circle where r is the radius of the inscribed circle.

An equilateral triangle is a triangle with all sides equal to each other.
Triangle area formula: Formula for the area of an equilateral triangle Along the radius of a circumscribed circle where R is the radius of the circumscribed circle.

A triangle is a geometric figure consisting of three points (the vertices of a triangle) that do not lie on the same straight line, connected by three segments (the sides of the triangle).
Triangle area formula: Triangle area formula in height and base where a is the base, h is the height.

A triangle is a geometric figure consisting of three points (the vertices of a triangle) that do not lie on the same straight line, connected by three segments (the sides of the triangle).
Triangle area formula: The formula for the area of a triangle on two sides and the angle between them where a and b are the sides, α is the angle between them.

A triangle is a geometric figure consisting of three points (the vertices of a triangle) that do not lie on the same straight line, connected by three segments (the sides of the triangle).
ФTriangle area formula: The formula for the area of a triangle along the radius of an inscribed circle and three sides where a, b and C - side, r is the radius of the inscribed circle.

A triangle is a geometric figure consisting of three points (the vertices of a triangle) that do not lie on the same straight line, connected by three segments (the sides of the triangle).
Triangle area formula: The formula for the area of a triangle along the radius of a circumscribed circle and three sides where a, b and C - side, R is the radius of the circumscribed circle.

A triangle is a geometric figure consisting of three points (the vertices of a triangle) that do not lie on the same straight line, connected by three segments (the sides of the triangle).
Triangle area formula: $Triangle area formula for three sides (Heron\'s formula)$ where a, b and c are sides, p is a semiperimeter: $Triangle area formula for three sides (Heron\'s formula)$

A triangle is a geometric figure consisting of three points (the vertices of a triangle) that do not lie on the same straight line, connected by three segments (the sides of the triangle).
Triangle area formula:: The formula for the area of a triangle on the side and two adjacent corners where c is the side, α,β are the angles belonging to it.