Circle geometry Circle geometry. Arc length is a fraction of circumference. ... we need to know what fraction of the circle is shown. To do this, we use the angle and compare it with 360˚.

Use a compass to draw a circle. Set a compass to the length of the radius required in order to copy a circle or arc. Excerpted and reprinted from Math for the Technician by Leo A. Meyer, one of the ...

GCSE Maths Geometry and measure learning resources for adults, ... Circles, sectors and arcs ... Circles have different angle properties described by different circle theorems.