Learn about arc length with this handy reference guide. Provides a detailed definition examples, and an interactive activity that enhances further explanation. Includes links to related topics.

Recall that a portion of a circle is called an arc. One way to measure an arc is with degrees.

Practice the relationship between inscribed & central angles that are subtended by the same arc length.

You are designing and marking out the running track for a new Olympic stadium. Where should the staggered starting positions be marked for the 200m and 400m events? This activity is aimed at Key Stage 4 students (age 14-16).