Welcome to The Riddler. Every week, I offer up problems related to the things we hold dear around here: math, logic and probability. There are two types: Riddler Express for those of you who want ...

Draw a simple triangle on top of the main shape. Make the triangle centered so the roof looks balanced. Keep the sides slightly slanted for a natural roof pitch. Extend the roof edges slightly beyond ...

A simple game with a die, a triangle, and a hell of a lot of patience, can help you to draw a famous fractal. Get out a pencil and clear your schedule. (Or get out a computer and clear less of your ...

Big Idea – We can describe, measure, and compare spatial relationships. to build on students' knowledge of triangle and to develop students' reasoning with properties of triangle to develop students' ...