# Key Stage 4, Maths, Parts of circles 2 (Arcs and Sectors)

Lesson 1

## Find the length of an arc on a semicircle and quarter circle and the perimeter of a semicircle and quarter circle

Lesson 2

## Find the length of an arc and the perimeter of a sector

Lesson 3

## Use the arc length to find the radius or angle of a sector

Lesson 4