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

Planes

Early Edge: The Coordinate Plane In this Early Edge video lesson, you'll learn more about The Coordinate Plane, so you can be successful when you take on high-school Math & Geometry. The Princeton Review

Introduction to plane geometry Introduction to plane geometry Math Open Reference

Definition of a plane Definition of the geometric plane Math Open Reference

Geometry: Points, Lines, and Planes Great (and short)Powerpoint Presentation on Points, Lines, and Planes. DocStoc

Building Blocks of Geometry Explains how to form and identify planes in a very simple manner. SparkNotes

Description of a Plane This page gives the definition and an easy-to-understand description of a 2-dimensional plane. Math is Fun