Identifying Shapes (A) - Free Printable

Let’s go shape by shape and decide if each one is regular or irregular.

A regular shape has:
- All sides the same length.
- All angles the same size.
- It looks balanced and symmetrical.

An irregular shape does NOT have all sides equal or all angles equal — it might look lopsided, stretched, or bent in a weird way.

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Row 1:

1. First shape (triangle) → Looks like an equilateral triangle. All sides seem equal, all angles look the same. → Regular
2. Second shape (triangle) → One side is much longer, angles are different. → Irregular
3. Third shape (square) → All sides equal, all corners 90°. → Regular
4. Fourth shape (quadrilateral) → Sides are different lengths, angles not equal. → Irregular

→ Row 1 answers: Regular, Irregular, Regular, Irregular

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Row 2:

5. Fifth shape (pentagon) → All sides and angles look equal. → Regular
6. Sixth shape (pentagon) → Sides are uneven, angles don’t match. → Irregular
7. Seventh shape (hexagon) → Looks perfectly symmetrical, all sides equal. → Regular
8. Eighth shape (hexagon?) → Has a “dent” — not symmetric, sides unequal. → Irregular

→ Row 2 answers: Regular, Irregular, Regular, Irregular

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Row 3:

9. Ninth shape (heptagon? 7 sides) → Looks smooth and even. → Regular
10. Tenth shape → Has a big bite taken out — definitely not regular. → Irregular
11. Eleventh shape (octagon) → Perfectly symmetrical, all sides equal. → Regular
12. Twelfth shape → Looks like a Pac-Man with extra bumps — irregular. → Irregular

→ Row 3 answers: Regular, Irregular, Regular, Irregular

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Row 4:

13. Thirteenth shape (decagon? 10 sides) → Smooth, even, symmetrical. → Regular
14. Fourteenth shape → Zigzaggy, uneven sides. → Irregular
15. Fifteenth shape (decagon) → Again, perfect symmetry. → Regular
16. Sixteenth shape → Looks like a starfish with uneven arms — irregular. → Irregular

→ Row 4 answers: Regular, Irregular, Regular, Irregular

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Final Answer:
Regular, Irregular, Regular, Irregular,
Regular, Irregular, Regular, Irregular,
Regular, Irregular, Regular, Irregular,
Regular, Irregular, Regular, Irregular