Let’s go through each shape one by one and decide if it’s a
regular or
irregular polygon.
Remember:
- A
regular polygon has all sides the same length AND all angles the same size.
- An
irregular polygon does NOT have all sides equal OR all angles equal (or both).
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Shape 1: Square
- All 4 sides look equal.
- All 4 corners are right angles (90°).
→ This is a
regular polygon.
Shape 2: Weird 4-sided shape (like a bent arrow)
- Sides are different lengths.
- Angles are clearly not all the same.
→ This is an
irregular polygon.
Shape 3: L-shaped figure (6 sides)
- Some sides are long, some short.
- Angles are mixed — some sharp, some wide.
→ This is an
irregular polygon.
Shape 4: Pentagon (5 sides)
- Looks like all sides are equal.
- All angles look the same too.
→ This is a
regular polygon.
Shape 5: Triangle
- Looks like all 3 sides are equal.
- All angles look equal (equilateral triangle).
→ This is a
regular polygon.
Shape 6: Rectangle
- Opposite sides are equal, but adjacent sides are NOT equal (longer top/bottom, shorter sides).
- Even though all angles are 90°, the sides aren’t all equal.
→ This is an
irregular polygon.
*(Note: Only squares are regular quadrilaterals — rectangles that aren’t squares are irregular.)*
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Final Answer:
Top row: Regular, Irregular
Middle row: Irregular, Regular
Bottom row: Regular, Irregular
Parent Tip: Review the logic above to help your child master the concept of regular and irregular polygons worksheet.
