Post on 17-Dec-2015
transcript
10.6 Three- Dimensional
FiguresI can name three-dimensional figures
Vocabulary
polyhedron cylinderface pyramidedge conevertex sphereprismbase
A polyhedron is a three-dimensional object with flat surfaces, called faces, that are polygons.
When two faces of a three-dimensional figure share a side, they form an edge. A point at which three or more edges meet is a vertex (plural: vertices).
Identify the number of faces, edges, and vertices on each three-dimensional figure.
A.
B.
5 faces
8 edges
5 vertices
7 faces
15 edges
10 vertices
Identify the number of faces, edges, and vertices on each three-dimensional figure.
A.
B.
6 faces
12 edges
8 vertices
5 faces
9 edges
6 vertices
A prism is a polyhedron with two congruent, parallel bases, and other faces that are all parallelograms. A prism is named for the shape of its bases. A cylinder also has two congruent, parallel bases, but bases of a cylinder are circular. A cylinder is not a polyhedron because not every surface is a polygon.
A pyramid has one polygon-shaped base and three or more triangular faces that share a vertex. A pyramid is named for the shape of its base. A cone has a circular base and a curved surface that comes to a point. A sphere has no base and one curved surface. All points on the surface are the same distance from a point called the center of the sphere.
Name the three-dimensional figure
The figure represents a cylinder.
Name the three-dimensional figure represented by the object.
The figure is a rectangular prism.
Name the three-dimensional figure represented by the object.
The figure is a square pyramid.
Lesson Quiz
1. Identify the number of faces, edges, and vertices in the figure shown.
Identify the figure described.
2. two congruent circular faces connected by a
curved surface
3. one flat circular face and a curved lateral
surface that comes to a point
cylinder
8 faces, 18 edges, and 12 vertices
cone
2. Identify the figure described. A square base with four triangles that come to a point.
A. square prism B. square pyramid C. rectangular prismD. rectangular pyramid
Lesson Quiz for Student Response Systems
3. Identify the figure described. A hexagonal base with six triangles that come to a point.
A. hexagonal prism B. triangular prism C. hexagonal pyramid D. triangular pyramid
Lesson Quiz for Student Response Systems