Naming Angles using Three Points - a worksheet with 12 angle diagrams for students to identify and name using three points.

To solve this problem, we need to name each angle using three points. The middle letter in the name of the angle is always the vertex (the point where the two lines meet).

Let's go through each angle one by one:

1. Angle 1: The vertex is at point B. So, the angle can be named as ∠ABC or ∠CBA.
2. Angle 2: The vertex is at point B. So, the angle can be named as ∠ABC or ∠CBA.
3. Angle 3: The vertex is at point B. So, the angle can be named as ∠ABC or ∠CBA.
4. Angle 4: The vertex is at point B. So, the angle can be named as ∠ABC or ∠CBA.
5. Angle 5: The vertex is at point B. So, the angle can be named as ∠ABC or ∠CBA.
6. Angle 6: The vertex is at point B. So, the angle can be named as ∠ABC or ∠CBA.
7. Angle 7: The vertex is at point B. So, the angle can be named as ∠ABC or ∠CBA.
8. Angle 8: The vertex is at point B. So, the angle can be named as ∠ABC or ∠CBA.
9. Angle 9: The vertex is at point B. So, the angle can be named as ∠ABC or ∠CBA.
10. Angle 10: The vertex is at point B. So, the angle can be named as ∠ABC or ∠CBA.
11. Angle 11: The vertex is at point B. So, the angle can be named as ∠ABC or ∠CBA.
12. Angle 12: The vertex is at point B. So, the angle can be named as ∠ABC or ∠CBA.

Final Answer:
1. ∠ABC or ∠CBA
2. ∠ABC or ∠CBA
3. ∠ABC or ∠CBA
4. ∠ABC or ∠CBA
5. ∠ABC or ∠CBA
6. ∠ABC or ∠CBA
7. ∠ABC or ∠CBA
8. ∠ABC or ∠CBA
9. ∠ABC or ∠CBA
10. ∠ABC or ∠CBA
11. ∠ABC or ∠CBA
12. ∠ABC or ∠CBA