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Geometry

Explore Geometry on MathWorld


Geometry is the branch of mathematics that studies figures, objects, and their relationships to each other. This contrasts with algebra, which studies numerical quantities and attempts to solve equations.

Geometry is a high school-level concept and course.


Classroom Articles on Geometry (Up to High School Level)

  • Acute Angle
  • Obtuse Angle
  • Altitude
  • Octagon
  • Angle
  • Octahedron
  • Area
  • Parallel
  • Circle
  • Parallelogram
  • Circumference
  • Pentagon
  • Collinear
  • Perimeter
  • Complementary Angles
  • Perpendicular
  • Cone
  • Pi
  • Congruent
  • Plane Geometry
  • Convex Hull
  • Platonic Solid
  • Cross Section
  • Point
  • Cube
  • Polygon
  • Cylinder
  • Polyhedron
  • Decagon
  • Polytope
  • Diameter
  • Prism
  • Dodecagon
  • Pyramid
  • Dodecahedron
  • Quadrilateral
  • Equilateral Triangle
  • Radius
  • Geometric Construction
  • Rectangle
  • Golden Ratio
  • Regular Polygon
  • Golden Rectangle
  • Right Triangle
  • Hendecagon
  • Similar
  • Heptagon
  • Solid Geometry
  • Hexagon
  • Sphere
  • High-Dimensional Solid
  • Square
  • Hypercube
  • Supplementary Angles
  • Hyperplane
  • Surface
  • Hypersphere
  • Surface Area
  • Hypotenuse
  • Tetrahedron
  • Icosahedron
  • Trapezoid
  • Isosceles Triangle
  • Triangle
  • Linear Function
  • Triangle Inequality
  • Midpoint
  • Volume
  • Nonagon