Math - Geometry

• 3D Coordinates (In Space)
• Angles
• Arcs
• Area Formulas
• Classifying Triangles
• Compass/Protractor Constructions
• Congruent Triangles
• Deductive Reasoning
• Dilations
• Geometric Mean
• Geometric Probability
• Graphing Linear Equations
• Inscribed Angles
• Intro to Trigonometry
• Line
• Loci and Transformations
• Mappings (Tessellations)
• Networks
• Pairs of Angles
• Parallels
• Parallels and Transversals
• Parts of Circles
• Planes
• Points
• Polygon Angles
• Polygon Parts
• Polygons and Polyhedra
• Prisms
• Proofs
• Pyramids and Cones
• Quadrilaterals
• Rays/Angles
• Reflections
• Right Triangles
• Rotations
• Segments
• Similar Polygons
• Similar Triangles
• Space
• Statements
• Surface Area Formulas
• Tangents
• Translations
• Triangle Centers
• Triangle Inequality
• Triangle Parts
• Triangle Segments
• Vectors
• Volume Formulas

Polygons and Polyhedra

Circumcircle of a Regular Polygon The circumcircle of a polygon is defined: the circle that passes through every vertex. Math Open Reference

Biography of Euclid A biography of Euclid. A short description of his life and contributions to the study of geometry. Links to other resources. Math Open Reference

Area of a Kite This page gives two methods for finding the area of a kite: a geometry formula and a trigonometric formula. Numerous connected pages offer a wide variety of information on all types of polygons. Math Open Reference

Biography of Pythagoras A biography of Pythagoras of Samos. A short description of his life and contributions to the study of geometry, including Pythagoras' Theorem. Links to other resources. Math Open Reference

Area of an Irregular Polygon How to find the area of an irregular polygon by breaking it down into triangles Math Open Reference

Biography of Thales A biography of Thales. A short description of his life and contributions to the study of geometry. Links to other resources. Math Open Reference

Perimeter of a trapezoid Formula and description of the perimeter of a trapezoid. Math Open Reference

Trapezoid median (midline, midsegment) Trapezoid median (midline or midsegment) definition and properties Math Open Reference

Area of a trapezoid. Definition and formula Area of a trapezoid. Definition and formula Math Open Reference

Trapezoid (2) Trapezoid definition and properties Math Open Reference