Locus
Locus of a point equidistant from another point

The locus of a point which moves so that it is always at a fixed distance (x) from a point (O) is a circle.

The easiest way to draw this locus is with a compass.

On a piece of paper, mark a point and label it O, then draw the locus of a point which is always 5cm away from O.

 

Flash file courtesy of the BBC Maths GCSE Bitesize

Forward to bisecting a line
See a video clip of how to draw an acute angle