Advanced Mathematics Primary 4 Symmetry

A regular polygon has exactly 4 lines of symmetry. How many sides does this polygon have?

A 4
B 3
C 6
D 8
Show Worked Solution

Worked Solution

Step 1: Recall the rule for regular polygons. A regular polygon with n sides has exactly n lines of symmetry. Step 2: Apply the rule. If the number of lines of symmetry = 4, then n = 4. Step 3: Identify the polygon. A regular 4-sided polygon is a square. A square has 4 lines of symmetry: 2 through midpoints of opposite sides and 2 through opposite corners. Answer: 4 sides

Correct answer: 4

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