Geometry is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space. Geometry is one of the oldest mathematical sciences.

Classical branches

Algebraic geometry —

Analytic geometry —

Differential geometry —

Euclidean geometry —

Non-Euclidean geometry —

Projective geometry —

Riemannian geometry —

Contemporary branches

Absolute geometry

Affine geometry

Archimedes' use of infinitesimals

Birational geometry

Complex geometry

Combinatorial geometry

Computational geometry

Conformal geometry

Constructive solid geometry

Contact geometry

Convex geometry

Descriptive geometry

Digital geometry

Discrete geometry

Distance geometry

Elliptic geometry

Enumerative geometry

Epipolar geometry

Finite geometry

Geometry of numbers

Hyperbolic geometry

Information geometry

Integral geometry

Inversive geometry

Klein geometry

Lie sphere geometry

Numerical geometry

Ordered geometry

Parabolic geometry

Plane geometry

Quantum geometry

Ruppeiner geometry

Spherical geometry

Symplectic geometry

Synthetic geometry

Systolic geometry

Taxicab geometry

Toric geometry

Transformation geometry

Tropical geometry

History of geometry

History of geometry

- Timeline of geometry
- Babylonian geometry
- Egyptian geometry
- Ancient Greek geometry
- Euclidean geometry
- Pythagorean theorem
- Euclid's
*Elements* *Measurement of a Circle*

- Euclidean geometry
- Indian mathematics
- Bakhshali manuscript

- Modern geometry
- History of analytic geometry
- History of the Cartesian coordinate system

- History of non-Euclidean geometry
- History of topology
- History of algebraic geometry

- History of analytic geometry

General geometry concepts

General concepts

Geometric progression — Geometric shape — Geometry — Pi — angular velocity — linear velocity — De Moivre's theorem — parallelogram rule — Pythagorean theorem — similar triangles — trigonometric identity — unit circle — Trapezoid — Triangle — Theorem — point — ray — plane — line — line segment

Measurements

Bearing

Angle

Degree

Minute

Radian

Circumference

Diameter

Trigonometric functions

Trigonometric function

Asymptotes

Circular functions

Periodic functions

Law of cosines

Law of sines

Vectors

Main article: Vector (geometric)

Amplitude

Dot product

Norm (mathematics) (also known as magnitude)

Position vector

Scalar multiplication

Vector addition

Zero vector

Vector spaces and complex dimensions

Complex plane

Imaginary axis

Linear interpolation

One-to-one

Orthogonal

Polar coordinate system

Pole

Real axis

Secant line

CIrcular sector or "sector"

Semiperimeter

Lists

List of mathematical shapes

List of geometers

List of curves

List of curves topics

See also

List of basic mathematics topics

List of mathematics articles

Table of mathematical symbols

Further reading

Rich, Barnett (2009). Schaum's Outline of Geometry (4th ed.). New York: McGraw-Hill. ISBN 978-0-07-154412-2.

Undergraduate Texts in Mathematics

Graduate Studies in Mathematics

Hellenica World - Scientific Library

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