Identifying parallel lines | Maths | Quizalize & Oak National Academy

Starter quiz

Order the shapes starting with the shape with the highest number of vertices.
- 1
  
  ⇔
  
  Decagon
- 2
  
  ⇔
  
  Pentagon
- 3
  
  ⇔
  
  Rectangle
- 4
  
  ⇔
  
  Triangle
Complete the sentence. This quadrilateral has ______ pair(s) of parallel sides.
- '2' ✓
Complete the sentence. This polygon has ______ pair(s) of perpendicular sides.
- '1' ✓
Complete the sentence. A pair of perpendicular sides meet to make a ______ angle.
- 'right' ✓
Select the correct end to this sentence. A trapezium has exactly …
- … one pair of perpendicular sides.
- … two pairs of perpendicular sides.
- … one pair of parallel sides. ✓
- … two pairs of parallel sides.
Name one of the two shapes that this pentagon has been decomposed into.
- 'triangle' ✓

True or false? These lines are all parallel to one another.
- True ✓
- False
True or false? These lines are all parallel to one another.
- True ✓
- False
True or false? These lines are all parallel to one another.
- True
- False ✓
To check if sides in a shape are parallel, you can …
- … use a right angle checker.
- … draw your own shape.
- … extend the sides to have longer lines. ✓
- … look really closely.
How many other sides are parallel to the side marked with an A in this polygon?
- '2' ✓
True or false: If a shape has a pair of parallel sides it must also have a pair of perpendicular sides.
- True
- False ✓

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If you extend the side of a shape beyond the shape you can identify parallel and perpendicular lines.
Lines are parallel because they are always the same distance apart.

Children may overgeneralise that parallel lines can only come in pairs or must be horizontal or vertical in orientation.

These misconceptions are addressed in the lesson. You may wish to use these to create additional examples and non-examples to compare and share.

Parallel - Parallel lines are straight lines that are always the same distance apart. They never get closer together or further apart.