# Category: Geometry

## Truncated cone area

A truncated cone is a shape obtained by cutting a cone with a plane parallel to the base and not containing a vertex. The height…

## Regular prism area

A prism is a polyhedron, two faces of which are congruent (equal) polygons lying in parallel planes, and the other faces are parallelograms that have…

## Area of a parallelepiped

A parallelepiped is a three-dimensional shape with six faces bounded by three pairs of parallel planes, so all of its faces are parallelograms. Essentially, it…

## Find the area of a cube

A cube is a simple shape, and it would be reasonable to assume that there is a simple formula for calculating its surface area. All…

## Tetrahedron area

A pyramid on a triangular base is called a tetrahedron. In other words, a tetrahedron is a shape bounded by four triangular faces. Obviously, a…

## The length of the sides of the rectangle

A rectangle is a quadrilateral with all angles equal to 90 degrees. Find the side length of a rectangle by knowing the diagonal and the…

## Equilateral triangle side length

An equilateral, or conformal, triangle is a regular polygon with three sides, the simplest of regular polygons. All sides of a regular triangle are equal…

## Length of base of an isosceles triangle

An isosceles triangle is a triangle in which the two sides are equal in length. Equal sides are called lateral, and the last unequal side…

## Side of triangle

To find the side of a triangle, knowing its two sides and the angle between them, you can use the cosine theorem. To do this,…

## Chord length of a circle

Chord is a segment connecting any two points of a circle. The diameter of the circle, the largest chord. Chord length formula: L=2 R sin(α…