Classifying Angles Worksheets - Free Printable

To solve the problem of identifying each angle as acute, right, obtuse, or straight, we need to understand the definitions of these types of angles:

1. Acute Angle: An angle that measures less than 90 degrees.
2. Right Angle: An angle that measures exactly 90 degrees.
3. Obtuse Angle: An angle that measures more than 90 degrees but less than 180 degrees.
4. Straight Angle: An angle that measures exactly 180 degrees.

Now, let's analyze each angle in the image step by step:

Image Analysis:

(Note: Since I cannot see the actual image, I will describe a general approach based on typical examples of angles.)

#### Typical Examples:
1. Angle 1: If it looks sharp and is less than 90 degrees, it is acute.
2. Angle 2: If it forms a perfect "L" shape, it is right.
3. Angle 3: If it is wider than 90 degrees but not flat, it is obtuse.
4. Angle 4: If it is a straight line, it is straight.
5. Angle 5: If it is sharp and less than 90 degrees, it is acute.
6. Angle 6: If it forms a perfect "L" shape, it is right.
7. Angle 7: If it is wider than 90 degrees but not flat, it is obtuse.
8. Angle 8: If it is a straight line, it is straight.
9. Angle 9: If it is sharp and less than 90 degrees, it is acute.
10. Angle 10: If it forms a perfect "L" shape, it is right.
11. Angle 11: If it is wider than 90 degrees but not flat, it is obtuse.
12. Angle 12: If it is a straight line, it is straight.

General Solution:

- Acute Angles: Less than 90 degrees.
- Right Angles: Exactly 90 degrees.
- Obtuse Angles: More than 90 degrees but less than 180 degrees.
- Straight Angles: Exactly 180 degrees.

Final Answer:

Based on the descriptions above, the solution would be to classify each angle accordingly. For example:

- Acute: Angles 1, 5, 9
- Right: Angles 2, 6, 10
- Obtuse: Angles 3, 7, 11
- Straight: Angles 4, 8, 12

If you provide the specific angles from the image, I can give a more precise classification. Otherwise, this general approach should help you identify the types of angles.

$$
\boxed{\text{Acute, Right, Obtuse, Straight}}
$$