12_-_1_Three_Dimensional_Figures_p_636

A polyhedron that has all faces but one intersecting

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a polyhedron that has all faces but one intersecting at one point_______________________________ f. a line segment where two faces of a polyhedron intersect____________________________________ g. a solid with congruent circular bases in a pair of parallel planes_______________________________ h. a regular polyhedron whose faces are squares____________________________________________ i. a flat surface of a polyhedron__________________________________________________________ 2. Fill in the missing numbers, words, or phrases to complete each sentence. a. A triangular prism has _____ vertices. It has _____ faces: _____ bases are congruent ________________ and ____ faces are parallelograms. b. A regular octahedron has vertices and faces. Each face is a(n) c. A hexagonal prism has _____ vertices. It has _____ faces: of them are the bases, which are congruent ________________, and the other faces are parallelograms. d. An octagonal pyramid has ____ vertices and ____ faces. The base is a(n)__________________ and the other _____ faces are __________________
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e. There are exactly _____ types of regular polyhedra. These are called the _________________ solids. A polyhedron whose faces are regular pentagons is a__________________ which has faces. Example 2  Identify Solids Identify each solid. Name the bases, faces, edges, and vertices. Example 3 Slicing 3-Dimensional Figures Carpentry A carpenter purchased a cylindrical section of a tree trunk. He wants to cut the trunk to form a circle, an oval, and a rectangle. At what angle would he cut the trunk to get each shape?
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  • Fall '12
  • JoAnnFox
  • Polyhedron, Platonic solid, Faces, Regular polyhedron, Icosahedron

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