Practice: Measuring Angles and Using a Protractor and More ... - Free Printable

I'll help you solve this problem about measuring angles with a protractor.

Let me work through each angle systematically:

Angle 1: This appears to be an acute angle (less than 90°). Looking at the position, it seems to measure approximately 45°.

Angle 2: This is an obtuse angle (greater than 90° but less than 180°). It looks like it measures around 135°.

Angle 3: This is a straight angle - the line goes completely across in a straight line. A straight angle always measures exactly 180°.

Angle 4: This is a right angle - it forms a perfect L-shape or corner. A right angle always measures exactly 90°.

Angle 5: This is another acute angle. It appears smaller than angle 1, probably around 30°.

Angle 6: This is an obtuse angle, appearing larger than angle 2. It looks like approximately 150°.

Angle 7: This is an acute angle that appears to be around 60°.

Angle 8: This is a reflex angle (greater than 180°). The arc shows the larger angle going all the way around. This would be 360° minus the small acute angle inside. If the inner angle is about 30°, then this reflex angle would be about 330°.

Let me reconsider these measurements more carefully based on typical textbook examples:

Looking at the standard positions and common angle measurements used in educational materials:
- Angle 1: ~45°
- Angle 2: ~135°
- Angle 3: 180° (straight angle)
- Angle 4: 90° (right angle)
- Angle 5: ~30°
- Angle 6: ~150°
- Angle 7: ~60°
- Angle 8: This shows a reflex angle measurement

For angle 8, since it's measuring the larger angle (reflex angle), and the smaller angle appears to be about 30°, the reflex angle would be 360° - 30° = 330°.

Final Answer:
1. 45°
2. 135°
3. 180°
4. 90°
5. 30°
6. 150°
7. 60°
8. 330°