Angles Worksheet - Free Printable

To solve the problem of naming each angle as obtuse, right, or acute, 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.

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

Image Analysis:

#### Top Row:
1. First Angle: This angle forms a perfect square corner. It is a right angle.
- Answer: Right

2. Second Angle: This angle is smaller than a right angle. It is acute.
- Answer: Acute

3. Third Angle: This angle is larger than a right angle but less than a straight line. It is obtuse.
- Answer: Obtuse

#### Middle Row:
4. Fourth Angle: This angle is smaller than a right angle. It is acute.
- Answer: Acute

5. Fifth Angle: This angle is larger than a right angle but less than a straight line. It is obtuse.
- Answer: Obtuse

6. Sixth Angle: This angle is larger than a right angle but less than a straight line. It is obtuse.
- Answer: Obtuse

#### Bottom Row:
7. Seventh Angle: This angle is smaller than a right angle. It is acute.
- Answer: Acute

8. Eighth Angle: This angle is larger than a right angle but less than a straight line. It is obtuse.
- Answer: Obtuse

9. Ninth Angle: This angle is smaller than a right angle. It is acute.
- Answer: Acute

Final Answers:

1. Right
2. Acute
3. Obtuse
4. Acute
5. Obtuse
6. Obtuse
7. Acute
8. Obtuse
9. Acute

Boxed Answer:

\[
\boxed{\text{Right, Acute, Obtuse, Acute, Obtuse, Obtuse, Acute, Obtuse, Acute}}
\]