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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.