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- 1. PolyhedronsPresentation By: Hyuk Chan
- 2. What is a Polyhedron?Definition from Math on Call:A polyhedron is a 3-dimensional closedfigure with faces that are polygons.
- 3. What is a Prism?Prisms arepolyhedrons withat least two facesthat are congruentand parallel
- 4. Prism
- 5. Vocabulary I will use during the the Presentation Face A ﬂat surface of Verticals a polyhedron The corner points t where the line meets in a Solid Figure t VolumeAmount of space inside t of a area (Example: Edge tCube’s volume= amount A line where of space inside of the t wo faces of a cube Polyhedron meet
- 6. Cube Net of a cubeTo get volume thevolume for the cube.You have to addheight, length andwidth.Equation=W x L X H
- 7. Just IncaseA net is a closed plane figure that can befolded into a closed 3D figure
- 8. Rectangle prism Net of aTo get the volume for Rectangle prisma rectangle prism. Dothe same thing asyou did for the cube.Equation=Same asa cube
- 9. CylinderGet the area of one of thecircles of a cylinder Net of aTo get the volume of a circle, Cylinderyou have to multiply theradios by the radios againThen multiply the answeryou got thatThen multiply the height byitEquation=πr h2
- 10. Cone Net for a ConeThe volume of a coneis 1/3 the volume ofa cylinder with thesame base area andheightEquation= 1/3πr h2
- 11. SphereSphere is a little hard to explain.It’s connected to a cylinder.The sphere doesn’t fill the whole Net of a Spherecylinder.It only covers 2/3 of the volume of thecylinder which has the same heightand the base area.this is the equation to get volume ofthe 2/3 of a cylinderEquation=4/3πr 3
- 12. Now a Quiz
- 13. InstructionsDivide into 3 teamsI’ll give you the questionWrite the answer on a whiteboardput the answer upThe first group to put the answer up andgets it right winsWins=Gets candy
- 14. Equation of a Cylinder is?
- 15. Equation of a Cylinder is? Equation=πr h
- 16. Equation of a Cylinder is? Equation=πr h 2
- 17. Why is the Equation for a Cone 1/3πr h? 2 Hint πr h is theequation for a cylinder
- 18. Why is the Equation for a Cone 1/3πr h? 2 Hint πr h is theequation for a cylinder
- 19. Why is the Equation for a Cone 1/3πr h? 2 Hint πr h is theequation for a cylinder It is because a volume of a cone is 1/3 of the volume of a cylinder which has the same base and height
- 20. Vocabulary QuestionsDon’t worry. Ionly have t wo vocabulary question NET is a...
- 21. Vocabulary QuestionsDon’t worry. Ionly have t wo vocabulary question NET is a... Closed plan figure that can be a folded in to a closed 3D figure
- 22. Draw a net of eachFigure I just talked about.
- 23. What is Polyhedron?
- 24. What is Polyhedron?A polyhedron is a is a 3-dimensional closed figure with faces that are polygons.
- 25. Sourceshttp://dictionary.reference.com/browse/parallelMath on call, Pg. 393~422http://math.about.com/od/formulas/ss/surfaceareavol_2.htmhttp://www.algebra.com/algebra/homework/Volume/Volume-of-a-sphere.solverhttp://www.google.com/imghp
- 26. Thank You For WatchingMy Presentation

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