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Altitude of a triangle This online calculator computes the altitude length of a triangle, given the lengths of sides of a triangle. |

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

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. |

Circular segment Here you can find the set of calculators related to circular segment: segment area calculator, arc length calculator, chord length calculator, height and perimeter of circular segment by radius and angle calculator. |

Volume of the hemisphere cut at an angle Volume of hemisphere asymmetrically cut by a flat plane under a given angle. |

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

Find the 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. |

Equation of a circle passing through 3 given points This online calculator finds a circle passing through three given points. It outputs the center and radius of a circle, circle equations and draws a circle on a graph. The method used to find a circle center and radius is described below the calculator. |

Find the distance and midpoint between two points This online calculator finds the distance and midpoint between two points in cartesian coordinates. |

Area of a triangle This is universal 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. |

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 |

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 |

Dot product This online calculator calculates the dot product of two vectors |

Cross product calculator This online calculator computes the cross product (or vector product) and visualizes the result in a cartesian coordinate system. |

Isometric projection of a vector This online calculator draws isometric projection of a vector, giving its coordinates in 3D space. |

Area of a Rectangle by the length of one side and the diagonal This online calculator finds the area of a rectangle from the length of one side and the diagonal. |

Rectangle intersection This online calculator displays result of intersection of two rectangles |

Equations of the line of intersection of two planes This online calculator finds the equations of a straight line given by the intersection of two planes in space. The calculator displays the canonical and parametric equations of the line, as well as the coordinates of the point belonging to the line and the direction vector of the line. |

Equations of the line of intersection of two planes This online calculator finds the equations of a straight line given by the intersection of two planes in space. The calculator displays the canonical and parametric equations of the line, as well as the coordinates of the point belonging to the line and the direction vector of the line. |

Cutting a circle Two ways to cut a circle into equal parts : sector cuts and parallel cuts. |