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Area of a triangle, equilateral isosceles triangle area formula calculator

Area of a triangle, equilateral isosceles triangle area formula calculator allows you to find an area of different types of triangles, such as equilateral, isosceles, right or scalene triangle, by different calculation formulas, like geron's formula, length of triangle sides and angles, incircle or circumcircle radius.

Select type of a triangle
Method of calculating the area of a triangle
Base: Height: Side 1: Side 2: Angle α: ° Side 1: Side 2: Side 3: Radius: Half sum of all sides: Side 1: Side 2: Side 3: Radius: Side: Radius: Radius: Height: Cathetus 1: Cathetus 2: Line segment 1: Line segment 2: Cathetus 1: Cathetus 2: Half sum of all sides: Lateral sides: Angle between them: Lateral side: Base: Angle α: ° Base: Angle α: °


Triangle is a polygon with three vertices, not lying on a one line, connected with three edges. Formula for area of a triangle: , where a - sides of a triangle, α - height Triangle is a polygon with three vertices, not lying on a one line, connected with three edges. Formula for area of a triangle: , where a, b, c - sides of a triangle, α - angle between them Triangle is a polygon with three vertices, not lying on a one line, connected with three edges. Formula for area of a triangle: , where a, b, c - sides of a triangle Triangle is a polygon with three vertices, not lying on a one line, connected with three edges. Formula for area of a triangle: , , where r - radius of a circle, p - half sum of a sides Triangle is a polygon with three vertices, not lying on a one line, connected with three edges. Formula for area of a triangle: , where a, b, c - sides of a triangle, R - radius of a circle Equilateral triangle is a triangle with all three sides of equal length. Formula for area of a triangle: , where a - sides of a triangle Equilateral triangle is a triangle with all three sides of equal length. Formula for area of a triangle: , where r - radius of the circle Equilateral triangle is a triangle with all three sides of equal length. Formula for area of a triangle: , where R - radius of the circle Equilateral triangle is a triangle with all three sides of equal length. Formula for area of a triangle: , where h - height Right triangle is triangle with an angle of 90 degrees. Formula for area of a triangle: , where a, b - cathetus Right triangle is triangle with an angle of 90 degrees. Formula for area of a triangle: , where d,e - segments on the hypotenuse Right triangle is triangle with an angle of 90 degrees. Formula for area of a triangle: , , where a, b - cathetus, p - half sum of the sides Isosceles triangle is a triangle with two equal sides. — base. Formula for area of a triangle: , where a - equal sides, α - angle between them Isosceles triangle is a triangle with two equal sides. — base. Formula for area of a triangle: , where a - side, b - base Isosceles triangle is a triangle with two equal sides. — base. Formula for area of a triangle: , where b - base, α - angle between equal sides

	Triangle calculator
Calculate angles, sides and area of a triangle.
Triangle calculator

	Area of a circle, circle area formula calculator
Find an area of a rhombus, by the formula, using radius or diameter of circle.
Area of a circle, circle area formula calculator

	Area of a rectangle, rectangle area formula calculator
Find an area of a rectangle, by the formulas, using length of sides, length of diagonal and angle between diagonals.
Area of a rectangle, rectangle area formula calculator

	Area of a trapezoid, trapezoid area formula calculator
Find an area of a trapezoid, by the formulas, using length of base sides, height, midline, length of diagonal and angle between them.
Area of a trapezoid, trapezoid area formula calculator

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