Question Video: Understanding that the Number of Edges is a Defining Attribute of 2D Shapes Mathematics • First Year of Primary School

Video Transcript

Do all the triangles have three edges or sides?

First, let’s find all of the triangles. This shape is a triangle. Does it have three sides? There’s one, two, three. This triangle does have three sides. Here’s another triangle. Does it have three edges or sides? One, two, three. This triangle does have three sides. This shape is also a triangle. Let’s check if it has three sides. Yes, it does.

The answer to the question do all the triangles have three edges or sides, is yes.