Narrator: What’s important to understand is that geometry has rules, has facts you need to know. Here’s a rule you probably know: that a shape with 4 right angles and 4 equal sides is a square!

Geometry is like a puzzle with easy-to-follow rules that explain how to fill in the missing pieces based on a given angle. One of the most important rules to remember is a straight-angle pair will ...

Interior angles in a triangle add up to 180 ... The techniques used are useful for solving all kinds of other geometry problems too. There are two rules to remember. First, when a diagonal ...