Determine the symmetry type of the object shown below. A) Z7 B) D14 C) Z14 D) D7

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Chapter2: Second-order Linear Odes
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**Question 22: Determine the Symmetry Type**

The image depicts a seven-pointed star object with a black circle in the center. This object is presented for analysis to determine the type of symmetry it exhibits.

**Answer Choices:**

A) \( \mathbb{Z}_7 \)  
B) \( D_{14} \)  
C) \( \mathbb{Z}_{14} \)  
D) \( D_7 \)  

**Explanation of Choices:**

- \( \mathbb{Z}_7 \): Refers to the cyclic group of order 7, indicating rotational symmetry around the center.
- \( D_{14} \): Refers to the dihedral group of order 14, indicating both rotational and reflectional symmetry.
- \( \mathbb{Z}_{14} \): Refers to the cyclic group of order 14, primarily theoretical for this context.
- \( D_7 \): Refers to the dihedral group of order 7, typically not standard as dihedral groups relate to twice the vertex count.

**Analysis:**

The seven-pointed star suggests the potential for rotational symmetry divisible by 7. Reflectional symmetry (i.e., symmetry across axes) would be analyzed for dihedral group applicability assuming 14 symmetries (7 rotations and 7 reflections), which would match the \( D_{14} \) choice given a seven-point array.

The correct answer indicates a more nuanced symmetry considering potential for both rotation and reflection.
Transcribed Image Text:**Question 22: Determine the Symmetry Type** The image depicts a seven-pointed star object with a black circle in the center. This object is presented for analysis to determine the type of symmetry it exhibits. **Answer Choices:** A) \( \mathbb{Z}_7 \) B) \( D_{14} \) C) \( \mathbb{Z}_{14} \) D) \( D_7 \) **Explanation of Choices:** - \( \mathbb{Z}_7 \): Refers to the cyclic group of order 7, indicating rotational symmetry around the center. - \( D_{14} \): Refers to the dihedral group of order 14, indicating both rotational and reflectional symmetry. - \( \mathbb{Z}_{14} \): Refers to the cyclic group of order 14, primarily theoretical for this context. - \( D_7 \): Refers to the dihedral group of order 7, typically not standard as dihedral groups relate to twice the vertex count. **Analysis:** The seven-pointed star suggests the potential for rotational symmetry divisible by 7. Reflectional symmetry (i.e., symmetry across axes) would be analyzed for dihedral group applicability assuming 14 symmetries (7 rotations and 7 reflections), which would match the \( D_{14} \) choice given a seven-point array. The correct answer indicates a more nuanced symmetry considering potential for both rotation and reflection.
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