Get a fresh, colourful angle on the basics of geometry! What are angles? Do you know the difference between a triangle and a quadrilateral? These videos on the basics of geometry will help you ...

Quadrilaterals, cubes, polyhedrons … sound like 10th grade math class? Perhaps, but they’re also examples of one of this fall’s biggest trends in home decor. Crisp, contemporary and pleasing to the ...

A technician often has to sketch or design ductwork and the other parts of an HVAC system. Sometimes you have to sketch the room or building you are working with. This means working with lines, angles ...