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Angle Measurement Practice

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Angle Measurement Practice

Protractor and angles illustration

📐 WALT: Identify and classify different types of angles

Success Criteria: I can name acute, right, obtuse, straight, and reflex angles

1. Match each angle type to its correct measurement range:

Acute angle:

Exactly 90°
Less than 90°
More than 180°

Right angle:

Exactly 90°
Between 90° and 180°
Exactly 180°

Obtuse angle:

Less than 90°
Between 90° and 180°
More than 180°

Reflex angle:

Between 180° and 360°
Exactly 180°
Less than 90°

2. Look at the angles below. Circle the correct angle type for each measurement:

a) 45° →

Acute
Right
Obtuse

b) 120° →

Acute
Right
Obtuse

c) 90° →

Acute
Right
Obtuse

d) 270° →

Straight
Reflex
Obtuse

3. Which of these angles would you find in everyday objects? Tick all that apply:

Corner of a book (90°)

Hands of a clock at 3 o'clock (90°)

Opening a door halfway (45°)

A straight line (180°)

📏 WALT: Use a protractor to measure angles accurately

Success Criteria: I can measure angles to the nearest degree using a protractor

4. Put the steps for measuring an angle with a protractor in the correct order (1-4):

____ Read the measurement where the second ray crosses the protractor scale

____ Place the centre point of the protractor on the angle's vertex

____ Align the zero line with one ray of the angle

____ Choose the correct scale (inner or outer) to read from

5. Draw and measure these angles using your protractor:

a) Draw a 60° angle and label it: ________________

b) Draw a 135° angle and label it: ________________

6. Estimate first, then measure the angles in the shapes your teacher provides:

Shape A - Angle 1: Estimate ____° Actual measurement ____° Type: ____________

Shape A - Angle 2: Estimate ____° Actual measurement ____° Type: ____________

Shape B - Angle 1: Estimate ____° Actual measurement ____° Type: ____________

🎯 Extension Challenge

7. Problem solving: In a triangle, if one angle is 90° and another is 30°, what is the third angle?

Show your working: _________________________________________________

8. Real-world connection: Find three different angles in your classroom and estimate their measurements:
9. Reflection: What was the trickiest part about measuring angles today? How did you overcome this challenge?

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