# Loci

A locus is a path. The plural of locus is loci. When we draw loci, we need to be very accurate and so we usually use a compass and a ruler.

Loci that involve finding points that are equidistant from a pair of lines usually involve bisecting an angle.

Loci that involve finding points that are equidistant from two points usually involve constructing a perpendicular bisector.

Loci that are equidistant from a point involve drawing a circle or an arc.

Equidistant means an equal distance away from a place.

## Parallel Lines and Angles

Finding angles using parallel lines and alternate angles. Provides a format to encourage the students to give reasons for their answers.

## GCSE type questions about angles

Use loci to determine which fire station is closest to particular towns.

## Loci questions for GCSE Maths

Use loci to determine which fire station is closest to particular towns.