The Wonderful World of the Triangle Inequality Theorem
The triangle inequality theorem says any two sides of a triangle must add to more than the third. It is the test for whether three given lengths can form a triangle at all, and it also bounds the range of a missing side. Practice questions on the triangle inequality theorem Can sides of lengths (4 […]
Exploring the Fundamentals: Properties of Equality and Congruence in Geometry
TL;DR: The properties of equality and congruence sound like a list of obvious-sounding rules, a equals a, if a equals b then b equals a, and so on. Boring on paper. But they are the official toolkit you cite when you write a geometry proof. Every step needs a reason, and these properties are the […]
