A 360o Protractor

1
A 360o Protractor
Outside scale from 0o to 360o going in a
clockwise direction.
Inside scale from 0o to 360o going in
an anti-clockwise direction.
2
Measuring Angles with a 360o Protractor
125o
0 increasing in a clockwise sense so we use the
outside scale
3
67o
0 increasing in a clockwise sense so we use the
outside scale
4
50o
5
4
120o
0 increasing in an anticlockwise sense, so we use
the inside scale.
6
5
224o
0 increasing in a clockwise sense so we use the
outside scale
7
Start the exercise sheet.
8
Construct the angle 60o.
Place a SMALL mark to indicate the angle.
Mark a line with a point on it.
60o
Ensure that this line passes through 0o
Label your angle.
9
Rules when constructing angles.

• Mark a line with a point on it.
• Place protractor along the line.
• Ensure that the line reads 0o.
• Place a small mark at the required angle.
• Remove the protractor.
• Join the point with the small mark (using a
  ruler)
• Label the angle.

10
(a) i) Measure and write down the size of angle
P. ii) Write down the mathematical name for
angle P. (b) i) Measure and write down the size
of angle Q. ii) Write down the mathematical
name for angle Q.
2 marks
2 marks