Understanding Three-Dimensional Geometric Figures
What's the Difference? 2D shapes are flat (like drawings on paper), but 3D solids are objects you can hold and have depth!
2D Shapes (Flat)
3D Solids (Have Depth)
The Six Main 3D Geometric Solids
1. Cube
- Faces: 6 square faces (all the same size)
- Edges: 12 edges (all the same length)
- Vertices: 8 corners (shown as red dots)
- Real-World Examples: Dice, Rubik's cube, gift boxes, ice cubes
2. Rectangular Prism (Parallelepiped)
- Faces: 6 rectangular faces (opposite faces are the same)
- Edges: 12 edges (4 sets of equal lengths)
- Vertices: 8 corners
- Real-World Examples: Cereal boxes, books, shoe boxes, bricks