Educational worksheet for identifying 2D and 3D shapes.

Let's solve this step by step. The task is to:

1. Identify the name of each shape shown in the grid.
2. Determine whether the shape is 2D (two-dimensional) or 3D (three-dimensional).
3. Fill in the blank line with the name of the shape and then check either 2D or 3D.

We'll go row by row, identify each shape, and classify it.

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🔹 Row 1:

1. Cube – It has depth, height, and width → 3D
2. Cylinder – Has height and circular bases → 3D
3. Rectangle – Flat, only length and width → 2D
4. Octagon – A flat polygon with 8 sides → 2D

✔ Answers:
- Cube → 3D
- Cylinder → 3D
- Rectangle → 2D
- Octagon → 2D

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🔹 Row 2:

5. Square Pyramid – Base is a square, with triangular faces meeting at a point → 3D
6. Hexagon – Six-sided flat shape → 2D
7. Rectangular Prism – Box-like shape with rectangular faces → 3D
8. Pentagon – Five-sided flat shape → 2D

✔ Answers:
- Square pyramid → 3D
- Hexagon → 2D
- Rectangular prism → 3D
- Pentagon → 2D

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🔹 Row 3:

9. Triangle – Flat three-sided shape → 2D
10. Triangular Prism – Two triangular bases and rectangular sides → 3D
11. Sphere – Round, three-dimensional ball → 3D
12. Trapezoid – Four-sided flat shape with one pair of parallel sides → 2D

✔ Answers:
- Triangle → 2D
- Triangular prism → 3D
- Sphere → 3D
- Trapezoid → 2D

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🔹 Row 4:

13. Square – Four equal sides, flat → 2D
14. Pentagonal Prism – Two pentagon bases connected by rectangles → 3D
15. Cone – Circular base and pointed top → 3D
16. Hexagonal Prism – Two hexagon bases and rectangular sides → 3D

✔ Answers:
- Square → 2D
- Pentagonal prism → 3D
- Cone → 3D
- Hexagonal prism → 3D

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✔ Final Answer Grid (with names and classifications):

| Shape | Name | 2D / 3D |
|-------|------------------|--------|
| 1 | Cube | 3D |
| 2 | Cylinder | 3D |
| 3 | Rectangle | 2D |
| 4 | Octagon | 2D |
| 5 | Square Pyramid | 3D |
| 6 | Hexagon | 2D |
| 7 | Rectangular Prism| 3D |
| 8 | Pentagon | 2D |
| 9 | Triangle | 2D |
| 10 | Triangular Prism | 3D |
| 11 | Sphere | 3D |
| 12 | Trapezoid | 2D |
| 13 | Square | 2D |
| 14 | Pentagonal Prism | 3D |
| 15 | Cone | 3D |
| 16 | Hexagonal Prism | 3D |

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📝 How to Fill Out the Worksheet:

For each box:
1. Write the name of the shape on the line below the image.
2. Then, check the correct box: either "2D" or "3D".

Example for first box:
```
[Cube]
2D [ ] 3D [X]
```

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🔍 Key Tips:

- 2D shapes are flat (like drawings on paper): circles, triangles, squares, polygons.
- 3D shapes have volume (they take up space): cubes, spheres, prisms, pyramids, cones.

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Let me know if you'd like a printable version or help filling out the worksheet!