Interior angles in a triangle add up to 180˚. Triangles close triangleA polygon with three straight sides. have three sides, therefore they have three angles. Interior angles in a triangle sum to a ...

In our mind’s eye, the universe seems to go on forever. But using geometry we can explore a variety of three-dimensional shapes that offer alternatives to “ordinary” infinite space. When you gaze out ...

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 ...

Keiran McLean: Building your own home is an exciting adventure for any family, but for one couple, Hugh and Daisy Watson, they’re really embracing the unknown. Cosmo Wunderlich:Listen you boring man, ...

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 ...