What Are 3D Shapes?
3D shapes, or three-dimensional shapes, are geometric figures with length, width, and height. Unlike 2D shapes, they occupy space and have volume. Common examples include cubes, spheres, cylinders, and pyramids. 🏯
Key 3D Shapes
Cube 🎲
- 6 square faces
- 12 edges and 8 vertices
- Volume: $ V = a^3 $ (where $ a $ is edge length)
Sphere ⚽
- No edges or vertices
- Volume: $ V = \frac{4}{3}\pi r^3 $ (where $ r $ is radius)
Cylinder 🥤
- 2 circular bases and 1 curved surface
- Volume: $ V = \pi r^2 h $ (where $ r $ is radius, $ h $ is height)
Pyramid 🏺
- Triangular faces meeting at an apex
- Volume: $ V = \frac{1}{3} \times \text{Base Area} \times \text{Height} $
Explore More
Want to dive deeper into 2D shapes? Check out our Geometry Basics tutorial for a visual breakdown of triangles, circles, and polygons. 📚