Euclidean geometry

E

• Elementary geometry‎ (4 C, 80 P)

G

• Geometric centers‎ (1 C, 35 P)
• Geometric dissection‎ (23 P)
• Geometric intersection‎ (2 C, 21 P)

K

• Kinematics‎ (3 C, 37 P)

L

• Lattice points‎ (1 C, 42 P)

M

• Multi-dimensional geometry‎ (2 C, 49 P)

P

• Euclidean plane geometry‎ (5 C, 101 P)

S

• Euclidean solid geometry‎ (6 C, 32 P)
• Euclidean symmetries‎ (43 P)

• Euclidean geometry

*

• Euclid's Elements
• Euclid's Optics

A

• Astronomy:Alignments of random points
• AlphaGeometry
• Anthropomorphic polygon
• Apollonius's theorem
• Apotome (mathematics)

B

• Beckman–Quarles theorem
• Book of Lemmas
• British flag theorem
• Busemann's theorem

C

• Carlyle circle
• Casey's theorem
• Cauchy's theorem (geometry)
• Centerpoint (geometry)
• Cevian
• Coincident
• Commandino's theorem
• Cone condition
• Congruence (geometry)
• Constant chord theorem
• Crystal system

D

• De Gua's theorem
• Differentiable vector-valued functions from Euclidean space
• Differentiable vector–valued functions from Euclidean space
• Differentiation in Fréchet spaces
• Disk (mathematics)
• Dissection problem
• Distance between two parallel lines
• Distance between two straight lines
• Distance from a point to a line
• Distortion (mathematics)
• Double wedge
• Droz-Farny line theorem

E

• Equal incircles theorem
• Equiangular lines
• Euclidean line
• Euclidean point
• Euclidean space
• Euclidean vector
• Euler's quadrilateral theorem
• Expansion (geometry)
• Eyeball theorem

F

• Finsler–Hadwiger theorem
• Flat (geometry)

G

• Gyration
• Physics:Gyrovector space

H

• Hadwiger–Finsler inequality
• Half-space (geometry)
• Hiroshi Haruki
• Homothetic center
• Hyperplane

I

• Integer lattice
• Intercept theorem
• Intersection of a polyhedron with a line

J

• Jung's theorem

L

• Line–line intersection
• Line–plane intersection

M

• Measurement of a Circle
• Method of exhaustion
• Milman's reverse Brunn–Minkowski inequality
• Multilateration

O

• On Spirals
• On Conoids and Spheroids
• On the Sphere and Cylinder
• One-dimensional symmetry group
• Orientation (geometry)
• Orthant
• Orthographic projection

P

• Parallelogram law
• Pendent
• Plane curve
• Plane symmetry
• Plane–plane intersection
• Distance from a point to a plane
• Pons asinorum
• Pseudo-range multilateration

R

• Radio navigation
• Rodrigues' rotation formula
• Root system
• Physics:Rotation
• Rotation of axes
• Rotation of axes in two dimensions
• Rytz's construction

S

• Saccheri–Legendre theorem
• Sacred Mathematics
• Sangaku
• Screw axis
• Similarity (geometry)
• Simple polytope
• Simplicial polytope
• Spiral similarity
• Square lattice
• Star domain
• Steiner–Lehmus theorem
• Steinmetz curve

T

• Theorem of the gnomon
• Translation of axes
• Treks into Intuitive Geometry
• Triangle group
• Triangle postulate
• Triangulation
• Triangulation (surveying)
• True range multilateration
• True-range multilateration
• Two-point tensor

V

• Van Schooten's theorem
• Varignon's theorem
• Vertex (geometry)
• Vertex angle