Recognise and sort polygons | Maths | Quizalize & Oak National Academy

Starter quiz

Which of the shapes is the same as shape b?
Match the correct name to each shape.

a

⇔

rectangle ✓

b

⇔

circle ✓

c

⇔

triangle ✓
How can you describe each shape? Match the shape to the description.

a

⇔

has four straight sides and four vertices ✓

b

⇔

has one curved line ✓

c

⇔

has thee straight sides and three vertices ✓
True or false. These shapes are all rectangles.

True ✓
False
True or false. A square is a type of rectangle.

True ✓
False
All of these shapes are ______.

circles

squares

triangles ✓

rectangles

These shapes are all polygons. Which of the statements are true for all polygons?

They have three or more straight sides. ✓

They are 2D shapes. ✓

They are 3D shapes.

They have sides that join at vertices. ✓
Which of these shapes are not polygons?

a ✓

b

c ✓
True or false. This shape is a polygon.

True
False ✓
Which of these polygons have five sides?

a

b ✓

c ✓

d
This polygon has ______ sides.

'8' ✓
How have these shapes been sorted?

Shapes in a) are polygons and shapes in b are not polygons.

Shapes in a) are 2D shapes and shapes in b are 3D shapes.

Shapes in a) have more than 6 vertices and shapes in b) have less than 6 ✓

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Some children might not count the sides or vertices accurately because they lose track of where they started counting.

Ask children how they can make sure they only count each side or vertex once. Model marking each side or vertex as you count it.

Polygon - A 2D shape made up of 3 or more straight sides.
2d / two dimensional - A shape with only two measurable dimensions, e.g. width and length, but no thickness.
Sides - The outside edges of a shape.
Vertices - A vertex is the point where two lines meet. The plural is vertices.