New
New
Year 5

Draw angles accurately using a protractor

I can draw angles accurately using a protractor.

New
New
Year 5

Draw angles accurately using a protractor

I can draw angles accurately using a protractor.

Lesson details

Key learning points

  1. A protractor can be used to draw angles.
  2. Protractors have two scales from 0 to 180 degrees.
  3. Start from zero when reading the scale on a protractor.
  4. Line the protractor up with one of the lines forming the angle.

Common misconception

Pupils draw a straight line to begin to create their angle and then place the centre of the protractor in the middle of the straight line.

Encourage pupils to place the middle spot of the protractor on one end of the straight line as this will make it easier to mark on the second line to create the vertex once the protractor has been removed.

Keywords

  • Protractor - A protractor is an instrument used to measure angles.

  • Angle - An angle is a measure of turn.

  • Polygon - A polygon is a 2D shape made up of three or more straight lines.

Encourage pupils to draw angles in a range of orientations, not just from one vertical or horizontal line. This will continue to help develop their sense of magnitude for angles more broadly.
Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

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6 Questions

Q1.
A triangle has how many angles?
An image in a quiz
2
Correct answer: 3
4
5
Q2.
The tool used to measure the size of an angle is known as:
Ruler
Correct answer: Protractor
Set square
Compass
Q3.
The name of the line we draw to mark an angle is known as __________.
a semi circle
Correct answer: an arc
a segment
Q4.
Tick the polygons.
Correct Answer: An image in a quiz
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz
Q5.
Which image shows the protractor placed correctly to measure the angle?
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
Q6.
Read the protractor scale to measure the angle. °
An image in a quiz
Correct Answer: 39, 38

6 Questions

Q1.
Order the steps for drawing an angle.
1 - Draw a straight line with a ruler.
2 - Line up your protractor with one end of the line.
3 - Mark a point on the edge of the protractor where the angle is.
4 - Use a ruler to join the end of the line with the point.
5 - Check the angle to see if it looks accurate.
Q2.
Tick the correct statements. To draw an angle, you should:
Only measure from the inside scale
Correct answer: Mark a point on the edge of the protractor where the angle is.
Ensure the lines you draw are always longer than the length of the protractor.
Only use a protractor to draw acute and obtuse angles.
Q3.
The zero line of a 45° angle has been drawn. Which line and arc would be most appropriate to use to create the angle?
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz
Q4.
The zero line of a 25° angle has been drawn. Which line and arc would be most appropriate to use to create the angle?
An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
Q5.
The zero line of a 130° has been drawn. Which line and arc would be most appropriate to use to create the angle?
An image in a quiz
An image in a quiz
An image in a quiz
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
Q6.
Jun says that he has drawn four polygons which all have a 30° angle marked. Tick the shapes that are correct.
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
Correct Answer: An image in a quiz
An image in a quiz
An image in a quiz