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Solids
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2. Choosing your career Finding your school Taking entrance exams Preparing for your own Social Action Activity OUTBOUND AT MT. BANAHAW Trigonometry Physics El Filibuterismo GRADUATION DAY! ARE YOU READY?
5. POLYHEDRONS Singular: polyhedron Plural: polyhedra A polyhedron is a three-dimensional solid figure in which each side is a flat surface.The word polyhedronis derived from the Greek poly (meaning many) and the Indo-European hedron (meaning seat or face). A polyhedron has no curved surfaces.
9. Toblerone Chocolate Box Magnolia Chocolait Container Doughnut Ice Cream Cone A can of Milk Basketball Shoebox
10. POLYHEDRONS These flat surfaces are polygons and are joined at their edges. The polygons of a polyhedron are called faces, the common sides are called the edges and the points where these edges intersect are called the vertices.
11. A B C D G H E F POLYHEDRONS
12. Prisms A polyhedron is a prism iff two of its congruent faces are parallel and its other faces are parellelograms. Lateral face base1
13. Prisms The two congruent faces of a prism are called the bases and the other faces are called the lateral faces.
14. Prisms The lateral faces are rectangles in a right prism, or parallelograms in an oblique prism. In a right prism, the joining edges and faces are perpendicular to the base faces.
15. Prisms ParallelepipedA prism which has a parallelogram as its base is called a parallelepiped. It is a polyhedron with 6 faces which are all parallelograms.
16. Prisms The edges of the prism where the lateral faces intersect are called its lateral edges. The lateral edges in a prism are congruent and parallel. Lateral edges:There are 5 congruent and parallel lateral edges in this prism.
17. Prisms The volume of a prism is the product of the base area times the height of the prism. V = Bh(Volume of a prism: B = base area, h = height)
18. Prisms The surface area of a prism is the sum of the areas of the bases plus the areas of the lateral faces. This simply means the sum of the areas of all faces. The surface area, S, of a right prism can be found using the formula S = 2B + ph.B = area of base, p = perimeter of base, h = height.
19. Prisms Find the volume and surface area of a cube that has an edge of 4cm.
20. Prisms Find the volume and surface area of a 3 ft right prism whose base is a rectangle with a length of 15ft and a width of 9ft.
21. Prisms This figure represents a slab of cheese. It is in the form of a right triangular prism. Find the least amount of wrapping needed to cover the cheese on all sides.
22. Synthesis The royal dance during the prom seemed memorable for AM and Kring that they became very close friends after the event. One day, AM bought a dozen of doughnuts for Kring. He noticed the box used for the doughnuts and remembered Mrs. Lumbre’s lesson.
23. Synthesis The two bases are rectangle with a length of 20cm and width of 15cm. The box is 6cm tall. Solve for the volume and surface area of the box.
