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• Area of a triangle

This is univeral online calculator for the area of a triangle which uses different methods to find the area of a triangle, depending on your knowledge of the triangle.

• Dot product

This online calculator calculates the dot product of two vectors

• Equation of a circle passing through 3 given points

This online calculator finds equation of a circle passing through 3 given points

• Equation of a plane passing through three points

This online calculator calculates the general form of the equation of a plane passing through three points

• Equilateral triangle

This online calculator calculates characteristics of the equilateral triangle: the length of the sides, the area, the perimeter, the radius of the circumscribed circle, the radius of the inscribed circle, the altitude (height) from single known value

• 3d coordinate systems

Transforms 3d coordinate from / to Cartesian, Cylindrical and Spherical coordinate systems.

• Distance and midpoint between two points

This online calculator find distance and midpoint between two points in cartesian coordinates.

• Intersection of two circles

This online calculator finds the intersection points of two circles given the center point and radius of each circle. It also plots them on the graph.

• Volume of the hemisphere cut at an angle

Volume of hemisphere asymmetrically cut by a flat plane under a given angle.

• Altitude of a triangle

This online calculator computes the length of a altitude of a triangle, given the lengths of edges of a triangle.

• Circular segment

Can calculate area, arc length,chord length, height and perimeter of circular segment by radius and angle.

• Trigonometric functions

This online calculator computes the values of elementary trigonometric functions, such as sin, cos, tg, ctg, sec, cosec for an angle, which can be set in degrees, radians, or grads.

• Volume of geometric shapes

Calculates volume of geometric shapes: cube, prism, pyramid, frustum, cone, cylinder, sphere, ellipsoid.