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Two dimentional geometry

Circle equation Intersection of circle and line Tangent lines from a point to circle Circle defined by 3 points Two circles intersection and lapping area Three circles intersection and lapping area Three tangent circles
A point inside a circle Tangent lines between two circles Line equation Parallel lines Intersection of two lines Line defined by two points Distance of a point to a line
Equileteral, right and scalene triangles Triangle defined by 3 points A triangle given by 3 lines A point inside a triangle Ellipse Find if a point is inside an ellipse Intersection of ellipse and line
Collinear 2 and 3 dimentional points Irregular quadrilateral Parallelogram, rhombus and isosceles trapezoid Polygons Cone, pyramid and truncated square pyramid Arc, segment, sector and torus Circular track

Three-dimensional geometry

Sphere Sphere and line intersection Two spheres intersection Sphere defined by four points Distance between two 3D lines Plane defined by three points Distance of a point to plane
Plane and line intersection Coplanar points Two planes intersection Three planes intersection

Basic information summary

Circle basic Triangle basic laws Trigonometry basic equations Line summary

Solved examples

Geometry solved examples Analytical geometry solved examples