Angles supplementary to the same angle or to congruent angles are congruent. Angles complementary to the same angle or to congruent angles are congruent. All right angles are congruent. Vertical …

Nov 22, 2016 · NO - Angle-Side-Side (ASS) The "ASS" postulate does not work, unlike the other ones. A way that students can remember this is that "ass" is not a nice word, so we don't use it in geometry …

Jul 23, 2025 · When attempting to prove certain problems and theorems, it is essential to know the basic properties of the given geometric figures. Here is a table exploiting the most basic properties:

Properties of a triangle help us to identify a triangle from a given set of figures easily and quickly. Learn about angle sum property, triangle inequality property, exterior angle theorem, etc with solved …

Learn geometry—angles, shapes, transformations, proofs, and more.

Struggling to remember all the rules for angles or 2D shapes? Take a look at this wiki on geometric formulas and definitions for a quick reminder of some basic geometry properties, principles and key …

Geometry is all about shapes and their properties. If you like playing with objects, or like drawing, then geometry is for you!

This handout is intended as a review of basic geometric formulas and properties. For further or more advanced geometric formulas and properties, consult with a SLAC counselor.

This is a partial listing of the more popular rules (theorems, postulates, and properties) that you will be using in your study of Geometry.

Pictures and examples explaining the most frequently studied math properties including the associative, distributive, commutative, and substitution property.