Measuring an angle with a protractor
Measuring an angle with a protractor.
- Use the stated properties and diagram markings, rather than judging by appearance.
- Matching ticks mean equal lengths; matching arrows mean parallel lines.
- A small square marks a right angle. Keep labels horizontal and include units.
Example 1
Read the acute or obtuse angle, starting from 0° on the right.
Use the scale whose zero lies on the starting ray.
Example 2
Read the acute or obtuse angle, starting from 0° on the right.
Use the scale whose zero lies on the starting ray.
Your turn
Read the acute or obtuse angle, starting from 0° on the right.
Check answer
Use the scale whose zero lies on the starting ray.
Read the acute or obtuse angle, starting from 0° on the right.
Check answer
Use the scale whose zero lies on the starting ray.
Read the acute or obtuse angle, starting from 0° on the right.
Check answer
Use the scale whose zero lies on the starting ray.
Read the acute or obtuse angle, starting from 0° on the right.
Check answer
Use the scale whose zero lies on the starting ray.
Read the acute or obtuse angle, starting from 0° on the right.
Check answer
Use the scale whose zero lies on the starting ray.
Read the acute or obtuse angle, starting from 0° on the right.
AnswerUse the scale whose zero lies on the starting ray.
Read the acute or obtuse angle, starting from 0° on the right.
AnswerUse the scale whose zero lies on the starting ray.
Read the acute or obtuse angle, starting from 0° on the right.
AnswerUse the scale whose zero lies on the starting ray.
Read the acute or obtuse angle, starting from 0° on the right.
AnswerUse the scale whose zero lies on the starting ray.
Read the acute or obtuse angle, starting from 0° on the right.
AnswerUse the scale whose zero lies on the starting ray.