Looking at the worksheet, I need to measure each angle with a protractor and identify its type based on the definitions provided at the top.
Let me go through each one:
1. This angle opens wider than a right angle but less than a straight line — that makes it obtuse. Measuring it, it looks like about 135°.
2. This angle is less than 90° — that’s acute. It measures approximately 45°.
3. This is a straight line — exactly 180°. That’s a straight angle.
4. This angle is more than 90° but less than 180° — obtuse. It appears to be around 135°.
5. This angle is less than 90° — acute. It measures about 45°.
6. This angle is greater than 90° but less than 180° — obtuse. It looks like 135°.
7. This is a straight line — 180°. Straight angle.
8. This angle is less than 90° — acute. It measures approximately 45°.
Now let me double-check my measurements and classifications:
- Acute angles: less than 90° → problems 2, 5, 8
- Right angles: exactly 90° → none in this set
- Obtuse angles: between 90° and 180° → problems 1, 4, 6
- Straight angles: exactly 180° → problems 3, 7
My measurements seem consistent with the visual representation of each angle.
Final Answer:
1. 135°, obtuse
2. 45°, acute
3. 180°, straight
4. 135°, obtuse
5. 45°, acute
6. 135°, obtuse
7. 180°, straight
8. 45°, acute
Parent Tip: Review the logic above to help your child master the concept of measuring angles protractor worksheet.
