Sides and Vertices of 2D Shapes — Let's Practise!

Sides and Vertices of 2D Shapes — Let's Practise! exercise

• How many sides and vertices?

  Hints

  The sides are the straight lines all around the outside of the 2D shape. Count the sides. This shape has four sides.

  The vertices are the point where two sides meet, they are a bit like corners. How many can you see?

  Solution

  This shape is a pentagon. It has 5 sides and 5 vertices.

• Features of a hexagon.

  Hints

  The sides are the straight lines all around the edge of the shape. How many can you count?

  This image shows the sides and vertices of a pentagon. This pentagon has 5 sides and vertices. Does the hexagon have more or fewer?

  Solution

  This shape is a hexagon. It has 6 sides and 6 vertices.

• How many sides?

  Hints

  The sides are the straight lines all around the edge of the shape. How many can you count?

  This shape is a trapezium. It has 4 sides.

  Solution

  • The orange shape is a triangle and has 3 sides.
  • The yellow shape is a star and has 10 sides.
  • The purple shape is a hexagon and has 6 sides.
  • The red shape is a hexagon and has 6 sides.

• Facts about shapes.

  Hints

  Count the straight lines around the edge of the shape, this is the number of sides.

  A circle is a special kind of shape because it has no straight sides.

  Solution

  • The first shape is an irregular pentagon, it has 5 sides and 5 vertices.
  • The second shape is a circle, it has 0 sides and 0 vertices.
  • The third shape is a regular pentagon, it has 5 sides and 5 vertices.

• Sides and vertices of a rectangle.

  Hints

  This square shows one vertex and one side labelled.

  The vertices are where two sides meet. There are four vertices on a square.

  Solution

  The rectangle has four sides and four vertices. Here is one side and one vertex labelled.

• What am I?

  Hints

  What is special about a circle?

  A shape with 5 sides is called a pentagon.

  Solution

  • What am I? I am a 2D shape with 5 vertices and 5 sides. I am a pentagon.
  • What am I? I am a 2D shape with 6 vertices and 6 sides. I am a hexagon.
  • What am I? I am a 2D shape but I have no vertices and no sides. I am a circle!