Exterior of a Conic Section

Face

Face of a Solid

Fair Die

Figures With Line Symmetry

Figures with Point Symmetry

Fixed Line

Fixed Point

Flip

Flip

Floor Function

Focus

Formula

Fractal

Fractal Figure

Frame of Reference of a Coordinate System

Frieze

Frustum

Frustum of a Cone

Frustum of a Pyramid

Full Angle

Functional Form of the Equation of a Line

Generatrix

Geoboard

Geometric Cube

Geometric Figure

Geometric Locus

Geometric Operation

Geometric Point

Geometric Solid

Geometric Space

Geometric Transformation

Geometric Vector

Geometry

Glide Reflection Symmetry

Golden Rectangle

Gottfried Leibniz (1646-1716)

Graduations on an Axis

Graph (visual representation)

Great Circle of a Sphere

Half-Circle Function

Half-Ellipse Function

Half-Plane

Height

Height of a Cone

Height of a Cylinder

Height of a Parallelogram

Height of a Prism

Height of a Pyramid

Height of a Trapezoid

Height of a Triangle

Hemisphere

Hendecagon

Heptadecagon

Heptagon

Heptahedron

Heron’s Formula

Hexadecagon

Hexagon

Hexahedron

Hollow Cylinder

Hollow Sphere

Homographic Function

Homography

Homothetic Figures

Homothetic Polygons

Homothetic Triangles

Honeycomb

Hyperbola in a Cartesian Plane

Hypotenuse

Icosahedron

Image of a Figure Under a Geometric Transformation

Incident

Incircle, or Inscribed Circle, of a Polygon

Inflection Point

Inscribed Angle

Interior Angle of a Circle

Interior Angle of a Convex Polygon

Interior Angles

Interior of a Conic Section

Internal Composition Law on a Set E

Intersecting Lines

Intersecting Planes

Intersection of Geometric Figures

Intersection of Two Lines

Invariant

Inverse Function

Inverse Pairs

Invertible Function

Isometric Perspective

Isometric Projection

Isometry

Isosceles Polygon

Isosceles Right Triangle

Isosceles Trapezoid

Isosceles Triangle

Kite

Lateral Area of a Solid

Lateral Face

Lateral Surface