MathematicsFreePrintable
Protractor Practice Worksheet
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Protractor Practice Worksheet
Use a protractor to measure and draw angles. Place its centre on the vertex and line up a ray with 0°. Read the scale that starts at 0° on that ray. Diagrams are schematic; use the labelled measurements where provided.
Read the Course Plan
A mini-golf designer is checking the turns in a new course. Use angle facts and your protractor skills to help.
1.Angle A is marked 35°. Is it acute, right, or obtuse?
- Acute
- Right
- Obtuse
2.Angle B is marked 90°. What type of angle is it?
3.Angle C is marked 140°. Circle the best description.
- Acute
- Right
- Obtuse
4.The baseline ray in the plan points right. When measuring from that ray with a protractor, which scale should you use: the one whose 0° is on the right, or the one whose 0° is on the left?
Check the Turns
Now practise reading, estimating, and constructing angles like a course designer.
5.To measure an angle accurately, which action should you do first?
- Place the protractor centre on the vertex
- Read the scale at the end of the second ray
- Estimate and write a number
6.A turn measures 68°. Is it acute, right, or obtuse? Explain how you know.
7.Draw an angle of 45° with a protractor. Mark its vertex and label the angle.
8.Draw an angle of 120° with a protractor. Mark its vertex and label the angle.
9.Two turns together make a straight line of 180°. One turn is 65°. What is the other turn? Show your calculation.
10.True or false: An angle measuring 92° is acute. Correct the statement if it is false.
TrueFalse
11.A path turns 40° and then 50°. What is the total of these two angles? What kind of angle is that total?
12.Describe one real-life task where measuring an angle could be useful. Include what might be measured.
3 printable pages
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