Question Video: Finding Properties of Polygons | Nagwa Question Video: Finding Properties of Polygons | Nagwa

# Question Video: Finding Properties of Polygons Mathematics • Third Year of Primary School

Scarlett has sorted the shapes into polygons and not polygons. Fill in the blank: All polygons are closed and ＿. [A] have more than 4 edges (sides) [B] have curves [C] have straight edges (sides)

02:37

### Video Transcript

Scarlett has sorted these shapes into polygons and not polygons. Fill in the blank. All polygons are closed and what. Have more than four edges or sides, have curves, or have straight edges or sides.

We know that Scarlett has sorted her shapes into two groups, polygons and not polygons. We’re told that all polygons are closed shapes. We have to pick another statement, which is true. Do all polygons have more than four edges, curves, or straight sides? Let’s check the polygons. Do all of these polygons have more than four edges or sides? No, they don’t. There’s a triangle. We know that triangles have three edges or three sides, so we know the first statement is false.

Do all polygons have curves? None of the polygons have curves. Some of the shapes in the group of not polygons have curves, but none of the polygons have curves. We know that this statement is also false. Do all polygons have straight edges or straight sides? Yes, they do. All of the shapes which Scarlett has sorted into the polygons group have straight sides. We looked closely at the shapes in Scarlett’s groups, the polygons and not polygons. All polygons are closed and have straight edges or straight sides.

Which of these is a polygon?

We’ve learned now that polygons are closed shapes which have straight sides. This is a closed shape and it has straight sides. So this is a polygon. This figure is open. It’s not a polygon. This is a curved shape. So it’s not a polygon either. All polygons are closed and have straight edges. This is the shape which is a polygon.

## Join Nagwa Classes

Attend live sessions on Nagwa Classes to boost your learning with guidance and advice from an expert teacher!

• Interactive Sessions
• Chat & Messaging
• Realistic Exam Questions