In KS2 Maths, you'll explore cool shapes! Year Four is super exciting because you learn about tricky shapes like heptagons and octagons. Triangles get fancy too, with equilateral ones! We'll chat about 2D shapes (like rectangles) and 3D shapes (like cubes). They call 2D shapes "polygons" and 3D shapes "polyhedrons" – big words, right?

Rectangles and squares are flat polygons, while cuboids and cubes are blocky polyhedrons. There are more words like angles and radius, but don't worry, we'll figure them out together. Ready for a fun quiz on shapes? Let's play!

Click to See How Quizzes Help Learning1.

What is the name of the triangle with all sides and all angles equal?

Right angled triangle

Isosceles triangle

Equilateral triangle

Pyramid

2.

What is the name given to a shape that has four faces all of which are equilateral triangles?

Tetrahedron

Polyhedron

Prism

Pyramid

Tetrahedrons are similar to pyramids, but pyramids have 5 faces, one of which is a square

3.

How many sides does an octagon have?

5

6

7

8

To help remember this, think of an octopus with 8 legs

4.

What is the name given to the distance from the centre of a polygon or circle to one of the vertices?

Circumference

Diameter

Radius

Tangent

The diameter is twice the radius

5.

How many degrees in a right angle?

60^{o}

90^{o}

180^{o}

360^{o}

There are 360^{o} in a full turn so a quarter turn will be 90^{o}

6.

Which of these is a regular polygon?

Rectangle

Right angled triangle

Square

Circle

A regular polygon has all sides equal

7.

What is a seven sided polygon called?

Heptagon

Hexagon

Pentagon

Tetrahedron

A **hepta**gon has 7 sides and a **hepta**gram is a star with 7 points

8.

What is the name of all flat shapes with three or more straight sides?

Triangle

Polyhedron

Polygon

Heptagon

So triangles, squares, rectangles and pentagons are all polygons

9.

What is a polyhedron?

A 3D shape where all faces are square

A 3D shape where all faces are flat polygons

A 2D shape where all angles are different

A 2D shape with twelve sides

Cubes and cuboids are both polyhedrons

10.

Which of these describes an isosceles triangle?

Triangle with 3 equal sides

Triangle with 2 equal sides and 2 equal angles

Triangle with 3 equal sides and 2 equal angles

Triangle with 2 equal sides and 3 equal angles

An isosceles triangle has 2 equal angles which are opposite to 2 sides of equal length

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^{o}at each of its corners