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 ...

Revise the different types of angles and rules for calculating angles. This guide includes interactive activities and a quiz. NEW: Angles in parallel lines Revise alternate, correspondent or ...

Engine performance is like a complicated formula in which each individual part plays a role in the final answer. Some parts of the formula affect the final outcome more than others. The valvetrain ...

Circle theorems are properties that are true for all circles, regardless of their size. There are six theorems to learn and recognise. Questions can have a combination of theorems. It is important to ...

The use of unusually high or low amounts of camber in the front suspension can be an indication of a setup designed incorrectly. If we need to set abnormal camber settings, we need to look for the ...

Have you recently had your 4x4 lifted and are suffering from a harmonic oscillation that can both be felt and heard? Have you rebalanced your tires or swapped in newly balanced driveshafts only to ...

When you're waiting in a busy restaurant or doctor's office, it may matter whether the tables, light fixtures and other objects are round or square. In a laboratory study, researchers found the shape ...

Believers in sacred geometry ascribe power and significance to naturally occurring shapes. They see them as evidence of organization — likely by a higher power. Within this small group, there is a ...

Can you imagine the imprint a four-dimensional hexagon might leave as it passes through your three-dimensional kitchen table? Probably not, but some people can. One such person was mathematician ...