Revise circle geometry for your National 5 maths exam with Bitesize Scotland interactive practice quizzes covering feedback and common errors.

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 ...

A more scientific explanation is that the Babylonians subdivided the circle using the angle on an equilateral triangle as the base unit — are we getting too technical for non-geometry students ...

Circle theorems - Higher - Edexcel Circles have different angle properties described by different circle theorems. Circle theorems are used in geometric proofs and to calculate angles.