Let's solve the problem step by step.
---
🔷 Task:
Identify 2D and 3D shapes
- Shade
2D shapes in
yellow.
- Shade
3D shapes in
green.
---
🔍 Understanding the Difference:
-
2D Shapes (Two-Dimensional): Flat shapes that have only
length and width. They lie on a plane.
- Examples: Circle, triangle, square, rectangle, pentagon, oval, etc.
-
3D Shapes (Three-Dimensional): Solid shapes that have
length, width, and height. They occupy space.
- Examples: Cube, cylinder, sphere, pyramid, rectangular prism, cone, etc.
---
🧩 Step-by-step Identification:
Let’s go through each shape in the grid:
####
Row 1:
1.
Cube → 3D
✔ →
Green
2.
Pentagon → 2D
✔ →
Yellow
3.
Square Pyramid → 3D
✔ →
Green
4.
Triangle → 2D
✔ →
Yellow
####
Row 2:
5.
Sphere → 3D
✔ →
Green
6.
Cylinder → 3D
✔ →
Green
7.
Diamond (Rhombus) → 2D
✔ →
Yellow
8.
Rectangular Prism (Box) → 3D
✔ →
Green
####
Row 3:
9.
Triangular Pyramid (Tetrahedron) → 3D
✔ →
Green
10.
Cube → 3D
✔ →
Green
11.
Triangular Prism → 3D
✔ →
Green
12.
L-shaped Polygon → 2D
✔ →
Yellow
####
Row 4:
13.
Triangular Prism (tilted) → 3D
✔ →
Green
14.
Oval (Ellipse) → 2D
✔ →
Yellow
15.
Rectangular Prism (vertical) → 3D
✔ →
Green
16.
Cylinder (horizontal) → 3D
✔ →
Green
---
✔ Final Answer:
| Shape | Type | Color |
|-------|------|--------|
| Cube | 3D | Green |
| Pentagon | 2D | Yellow |
| Square Pyramid | 3D | Green |
| Triangle | 2D | Yellow |
| Sphere | 3D | Green |
| Cylinder | 3D | Green |
| Rhombus | 2D | Yellow |
| Rectangular Prism | 3D | Green |
| Triangular Pyramid | 3D | Green |
| Cube | 3D | Green |
| Triangular Prism | 3D | Green |
| L-shape | 2D | Yellow |
| Triangular Prism | 3D | Green |
| Oval | 2D | Yellow |
| Rectangular Prism | 3D | Green |
| Cylinder | 3D | Green |
---
🎨 How to Shade:
-
Yellow: Pentagon, Triangle, Rhombus, L-shape, Oval
-
Green: All others (Cube, Pyramids, Sphere, Cylinders, Prisms)
> 💡 Tip: Look for depth, shading, or visible sides — if it has thickness or appears solid, it’s likely 3D.
---
✔ Summary:
-
2D Shapes (shade yellow): Pentagon, Triangle, Rhombus, L-shape, Oval
-
3D Shapes (shade green): All remaining shapes
Now you can shade accordingly! 🖍️💛🟢
Parent Tip: Review the logic above to help your child master the concept of 1st grade shape worksheet.