2D and 3D Shapes Worksheet for Second Grade - Free Printable

Here is the completed worksheet with the correct names and 2D/3D classifications for each shape:

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Row 1:

1. Shape: Cube
→ Classification: 3D
*(It’s a solid object with 6 square faces, length, width, and height.)*

2. Shape: Cylinder
→ Classification: 3D
*(It has circular bases and a curved surface — occupies space.)*

3. Shape: Rectangle
→ Classification: 2D
*(Flat shape with 4 sides and 4 right angles — only length and width.)*

4. Shape: Octagon
→ Classification: 2D
*(Flat polygon with 8 straight sides.)*

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Row 2:

5. Shape: Square Pyramid
→ Classification: 3D
*(A pyramid with a square base and triangular sides meeting at a point — solid object.)*

6. Shape: Hexagon
→ Classification: 2D
*(Flat polygon with 6 sides.)*

7. Shape: Rectangular Prism
→ Classification: 3D
*(Solid shape like a box — has length, width, height.)*

8. Shape: Pentagon
→ Classification: 2D
*(Flat polygon with 5 sides.)*

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Row 3:

9. Shape: Triangle
→ Classification: 2D
*(Flat shape with 3 sides.)*

10. Shape: Pentagonal Prism
→ Classification: 3D
*(Solid shape with two pentagonal bases and rectangular sides.)*

11. Shape: Sphere
→ Classification: 3D
*(Perfectly round ball — occupies space in all directions.)*

12. Shape: Trapezoid
→ Classification: 2D
*(Flat quadrilateral with one pair of parallel sides.)*

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Row 4:

13. Shape: Square
→ Classification: 2D
*(Flat shape with 4 equal sides and 4 right angles.)*

14. Shape: Triangular Prism
→ Classification: 3D
*(Solid with two triangular bases and 3 rectangular sides.)*

15. Shape: Cone
→ Classification: 3D
*(Solid with a circular base and tapering to a point.)*

16. Shape: Hexagonal Prism
→ Classification: 3D
*(Solid with two hexagonal bases and rectangular sides.)*

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✔ Final Answer Summary (for filling in the worksheet):

| Shape | 2D or 3D |
|-------------------|----------|
| Cube | 3D |
| Cylinder | 3D |
| Rectangle | 2D |
| Octagon | 2D |
| Square Pyramid | 3D |
| Hexagon | 2D |
| Rectangular Prism | 3D |
| Pentagon | 2D |
| Triangle | 2D |
| Pentagonal Prism | 3D |
| Sphere | 3D |
| Trapezoid | 2D |
| Square | 2D |
| Triangular Prism | 3D |
| Cone | 3D |
| Hexagonal Prism | 3D |

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📌 Key Concept Reminder:
- 2D Shapes are flat — they have only length and width (e.g., circle, square, triangle).
- 3D Shapes are solid — they have length, width, and height (e.g., cube, sphere, cylinder).

This worksheet helps students visually distinguish between flat shapes and objects that occupy space.

Let me know if you’d like a printable version or flashcards for review! 📐🔷