Three dimensional figures
- 1. THREE-DIMENSIONAL FIGURES Haydee Dizon Macapinlac September 3, 2014
- 2. Objectives: Define three-dimensional figures Identify the parts of a 3D figure Identify and describe attributes of three-dimensional shapes including prisms, pyramids, spheres, cones, and cylinders using appropriate vocabulary.
- 3. What are three-dimensional figures? These figures are solid or hollow, you could hold them in your hand. They have length, width, and height. They are also called solid geometric figures.
- 4. Solid Figures can have: Surface Face Base Edge Corner Edge
- 5. Surface • The curved part of a 3D shape. • Cylinders and cones have surfaces.
- 6. Face • Part of a 3D figure that is flat. • The side of a 3D figure.
- 7. Base • The bottom face of a 3D object. Base
- 8. Edge • The line where two faces meet on a 3D object.
- 9. Corner • The point where three or more edges touch.
- 10. Vertex (Vertices) • The point where three or more edges meet. • This cube has 12 vertices all together.
- 11. TYPES OF THREE-DIMENSIONAL FIGURES (SOLID FIGURES)
- 12. Cube • A three-dimensional shape which has: – 6 square faces with the same sizes – 12 edges – 8 vertices – 8 corners
- 13. Cube • Some faces are parallel. • Some edges are parallel. • Some faces are perpendicular. • Some edges are perpendicular.
- 14. Cube • Cubes in daily life: – A box – Blocks – Dice
- 15. Sphere • A perfectly round three-dimensional shape, like a ball. • It has only one curved surface. • A sphere has no face,edge,vertex and corner.
- 16. Sphere • Spheres in daily life: – A Ball – A Globe – A Marble
- 17. Cone • A three-dimensional shape made up of: – a circular base – a curved surface that comes to a point at the top (vertex). • A Cone has no edge and corner.
- 18. Cone • Cones in daily life: – Ice Cream Cone – A Party Hat
- 19. Cylinder • A three-dimensional shape with one curved surface and 2 equal circles as its base. • A Cylinder has 2 faces, 1 surface, no edges and no corners.
- 20. Cylinder • Cylinders in daily life: – A Soup Can – A Roll of Toilet Paper
- 21. Pyramid • A three-dimensional shape which has a polygon for its base and triangular faces which meet at one point (vertex).
- 22. Rectangular Prism • A 3D shape that has: – 6 rectangular faces • 2 of those faces are equal – 12 edges – 8 vertices
- 23. Rectangular Prism • Some faces are parallel • Some edges are parallel • Some faces are perpendicular • Some edges are perpendicular
- 24. Rectangular Prism • Rectangular prism in daily life: – A Kleenex Box – A Refrigerator – A Cereal Box
- 25. References: • Plane and Solid Mensuration, A simplified Approach by Earnhart and Bejasa • Simplified Engineering Mathematics by JAS Tordillo • www.google.com • www.slideshare.com