Securing understanding of perimeter and area | Maths | Quizalize & Oak National Academy

Starter quiz

True or false? These lines are an example of parallel lines.
- True
- False ✓
An alternative name for a regular triangle is an ______ triangle
- 'equilateral' ✓
Starting with triangle, put these shapes in order from smallest to greatest number of sides.
- 1
  
  ⇔
  
  triangle
- 2
  
  ⇔
  
  trapezium
- 3
  
  ⇔
  
  pentagon
- 4
  
  ⇔
  
  hexagon
- 5
  
  ⇔
  
  octagon
How many unit squares are inside the rectangle?
- '28' ✓
What is the length of the line marked $k$ ?
- '8 cm' ✓
If two lines are perpendicular then they ______
- never meet
- meet at one point
- meet at right angles at one point ✓
- meet at multiple points

Match the word to its definition
- perimeter
  
  ⇔
  
  the distance around a 2D shape ✓
- area
  
  ⇔
  
  the size of the surface ✓
- parallelogram
  
  ⇔
  
  the quadrilateral with two pairs of parallel and equal sides ✓
What is the minimum information needed to calculate both the area and perimeter of a rectangle?
- All four lengths
- Two parallel lengths
- Two perpendicular lengths ✓
- One length and the diagonal
True or false? Given a value for the perimeter, there is only one possible rectangle you could draw.
- True
- False ✓
A rectangle has an area of 72 units $^2$ and a perimeter of 36 units. How long are the length and width?
- Length = 9 units and width = 8 units
- Length = 10 units and width = 8 units
- Length = 11 units and width = 7 units
- Length = 12 units and width = 6 units ✓
A parallelogram with four interior angles, each equal to 90 degrees, is called a ______
- 'rectangle' ✓
Calculate the area and perimeter of this parallelogram.
- Area = 48 m $^2$ and perimeter = 24 m
- Area = 48 m $^2$ and perimeter = 36 m ✓
- Area = 80 m $^2$ and perimeter = 24 m
- Area = 80 m $^2$ and perimeter = 36 m

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Pupils may confuse perimeter and area.

Perimeter is the distance around a 2D shape. Area is the size of the surface.

Parallelogram - A parallelogram is a quadrilateral with two pairs of parallel and equal sides.
Area - The area is the size of the surface and states the number of unit squares needed to completely cover that surface.
Perimeter - The perimeter is the distance around a 2D shape.