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12.1 Exploring Solids
Types of Solids Prism Pyramid Cone Cylinder Sphere
Using properties of polyhedra <ul><li>A  polyhedron  is a solid that is bounded by polygons called  faces , that enclose a...
Using properties of polyhedra <ul><li>A  vertex  of a polyhedron is a point where three or more edges meet.  The plural of...
 
Ex. 1:  Identifying Polyhedra <ul><li>Decide whether the solid is a polyhedron.  If so, count the number of faces, vertice...
<ul><li>This is a polyhedron.  It has 5 faces, 6 vertices, and 9 edges. </li></ul><ul><li>This is not a polyhedron.  Some ...
Identifying Polyhedra This is a  polyhedron . It has 5 faces, 6 vertices, and 9 faces. This is not a polyhedron. None of i...
 
<ul><li>PG 798 </li></ul><ul><li>#’s 3,4,5 </li></ul>Homework
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12.1 exploring solids

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12.1 exploring solids

  1. 1. 12.1 Exploring Solids
  2. 2. Types of Solids Prism Pyramid Cone Cylinder Sphere
  3. 3. Using properties of polyhedra <ul><li>A polyhedron is a solid that is bounded by polygons called faces , that enclose a since region of space. An edge of a polyhedron is a line segment formed by the intersection of two faces. </li></ul>
  4. 4. Using properties of polyhedra <ul><li>A vertex of a polyhedron is a point where three or more edges meet. The plural of polyhedron is polyhedra or polyhedrons . </li></ul>
  5. 6. Ex. 1: Identifying Polyhedra <ul><li>Decide whether the solid is a polyhedron. If so, count the number of faces, vertices, and edges of the polyhedron. </li></ul>
  6. 7. <ul><li>This is a polyhedron. It has 5 faces, 6 vertices, and 9 edges. </li></ul><ul><li>This is not a polyhedron. Some of its faces are not polygons. </li></ul><ul><li>This is a polyhedron. It has 7 faces, 7 vertices, and 12 edges. </li></ul>
  7. 8. Identifying Polyhedra This is a polyhedron . It has 5 faces, 6 vertices, and 9 faces. This is not a polyhedron. None of its faces are polygons. This is a polyhedron. It has 7 faces, 7 vertices, and 12 edges.
  8. 10. <ul><li>PG 798 </li></ul><ul><li>#’s 3,4,5 </li></ul>Homework

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