A triangle is a polygon. It is a closed 3-sided shape made up of straight lines. The ‘tri-’ part of the word triangle means three. A triangle has 3 sides and 3 angles. Interior angles are the angles ...

This article was originally published on The Conversation. Read the original article. For many people, memories of maths lessons at school are anything but pretty. Yet "beautiful" is a word that I and ...

Image courtesy of McGraw Hill. Imagine learning how to determine the slope of a right triangle by sending your own tiny skier down ski trails or by setting up skateboard ramps for a virtual skater to ...