Looking at the third row of shapes:
7. Regular heptagon: This is a regular heptagon (7-sided polygon) with all sides and angles equal. A regular heptagon has 7 lines of symmetry - each line goes from a vertex to the midpoint of the opposite side.
8. Regular octagon: This is a regular octagon (8-sided polygon) with all sides and angles equal. A regular octagon has 8 lines of symmetry - four lines connecting opposite vertices and four lines connecting midpoints of opposite sides.
9. Equilateral triangle: This is an equilateral triangle with all sides and angles equal. An equilateral triangle has 3 lines of symmetry - each line goes from a vertex to the midpoint of the opposite side.
Based on my analysis of all the shapes, I can now provide the complete solution.
The number of lines of symmetry for each shape is:
- Square: 4
- Regular hexagon: 6
- Regular pentagon: 5
- Parallelogram: 0
- Irregular pentagon: 0
- Rhombus: 2
- Regular heptagon: 7
- Regular octagon: 8
- Equilateral triangle: 3
This completes the solution to the problem.
Parent Tip: Review the logic above to help your child master the concept of line of symmetry worksheet pdf.
