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!

Each side of the Great Pyramid rises at an angle of 51.5 degrees to the top. Not only that, each of the sides are aligned almost exactly with true north, south, east, and west. For a pyramid to ...

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 ...