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What is the angle of rotational symmetry?

The image you've uploaded depicts a **triskele**, a design based on three interlocked spirals. This is a common symbol found in various cultures, especially in Celtic and ancient art.

To determine the **angle of rotational symmetry**, we need to analyze how many times the shape can be rotated around its center and still look the same.

### Steps:
1. **Number of rotations:** The shape has three identical parts (three spirals), which means it can be rotated about the center and still look the same after completing each third of a full rotation.
   
2. **Angle of rotational symmetry:** Since there are three repeating sections, the angle of rotational symmetry is given by dividing \(360^\circ\) by 3:
   \[
   \text{Angle of rotational symmetry} = \frac{360^\circ}{3} = 120^\circ
   \]

Thus, the angle of rotational symmetry for this design is **120 degrees**.

Would you like more details or have any questions?

Here are 5 related questions to expand on this topic:
1. What is the order of rotational symmetry of this shape?
2. How do you calculate the angle of rotational symmetry for any polygon?
3. What are some other shapes that have the same rotational symmetry as the triskele?
4. How does reflectional symmetry differ from rotational symmetry in this symbol?
5. Can you explain the significance of the triskele in various cultures?

**Tip:** The rotational symmetry angle always divides evenly into 360 degrees based on the number of identical sections.

Learn how to determine the angle of rotational symmetry for a triskele, a design featuring three interlocked spirals. The problem involves key geometric concepts, including symmetry and angles, and is suitable for students in Grades 5-7.

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