Using the image below, how many lines of symmetry would the shape have? (Hint: The image is a regular pentagon.)
Question
Using the image below, how many lines of symmetry would the shape have?
(Hint: The image is a regular pentagon.)
Solution
1. Break Down the Problem
To determine the number of lines of symmetry in a regular pentagon, we need to understand the properties of regular polygons.
2. Relevant Concepts
A regular polygon has as many lines of symmetry as it has sides. For a regular pentagon:
- It has 5 sides.
- The lines of symmetry will either pass through a vertex and the midpoint of the opposite side or through the midpoints of opposite sides.
3. Analysis and Detail
- For each vertex of the pentagon, there is a corresponding line of symmetry that passes through that vertex and the midpoint of the opposite side.
- In addition, since a pentagon has five vertices, there will be five such lines of symmetry.
4. Verify and Summarize
In a regular pentagon, each vertex acts as a point of symmetry, ensuring that all sides and angles are congruent, and thus reinforcing that the pentagon has its corresponding lines of symmetry.
Final Answer
A regular pentagon has 5 lines of symmetry.
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