Naming Angles worksheet for identifying obtuse, right, and acute angles.

Let’s go through each angle one by one. We need to name each as obtuse, right, or acute.

Remember:
- A right angle is exactly 90 degrees — it looks like the corner of a square. It often has a little square symbol in the corner.
- An acute angle is smaller than 90 degrees — it’s “sharp” or “pointy.”
- An obtuse angle is bigger than 90 degrees but less than 180 — it’s “wide” or “open.”

Now let’s look at each angle:

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First row:

1. First angle (top left): Has a small square in the corner → that means it’s a right angle.
2. Second angle (top middle): Looks sharp, smaller than a right angle → acute.
3. Third angle (top right): Looks wide, bigger than a right angle → obtuse.

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Second row:

4. Fourth angle (middle left): Very narrow, definitely smaller than 90° → acute.
5. Fifth angle (middle center): Has a small square → right angle.
6. Sixth angle (middle right): Wide open, bigger than 90° → obtuse.

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Third row:

7. Seventh angle (bottom left): Has a small square → right angle.
8. Eighth angle (bottom middle): Wide, bigger than 90° → obtuse.
9. Ninth angle (bottom right): Sharp point, smaller than 90° → acute.

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Let me double-check:

- Right angles: #1, #5, #7 → all have the square mark ✔
- Acute angles: #2, #4, #9 → all look pointy and small ✔
- Obtuse angles: #3, #6, #8 → all look wide and open ✔

Everything matches!

Final Answer:
right, acute, obtuse, acute, right, obtuse, right, obtuse, acute