Youtuber and comedian Lilly Singh has discovered that triangles are the perfect model for building your self-esteem and getting to know your own values. Triangl

Meet Triangle. He is going to play a sneaky trick on his friend, Square. Or so Triangle thinks. . . . With this first tale in a trilogy, partners in crime Mac B

The creative examples, simple text, and art in this series help students learn primary math concepts.

In this introduction to polygons, a triangle convinces a shapeshifter to make him a quadrilateral and later a pentagon, but discovers that where angles and side