Page 3 - LN 2D shapes
P. 3
Octagon
An octagon is an eight-sided polygon which can be either regular or irregular. It is a 2d shape
which has eight angles. The sum of all the interior angles of an octagon is 1080°. The stop
sign board has an octagon shape, which you can see on the roadside.
Learning outcome: The students are able to learn about different 2D shapes, their
properties and real life examples.
