![]() |
Chapter Ten: |
|
|
Geometry Notes Chapter 10 Section 10.1
|
Take notes on the following topics.
Section 10-4 Surface Areas of Pyramids and Cones Vocabulary Pyramid (p. 537) A pyramid is a polyhedron in which one face, the base, is a polygon and the other faces, the lateral faces, are triangles with a common vertex, called the vertex of the pyramid. An altitude of a pyramid is the perpendicular segment from the vertex to the plane of the base. Its length is the height of the pyramid. A regular pyramid is a pyramid whose base is a regular polygon and whose lateral faces are congruent isosceles triangles. The slant height of a regular pyramid is the length of an altitude of a lateral face.
Cone (p. 539) A cone is a three-dimensional figure that has a circular base, a vertex not in the plane of the circle, and a curved lateral surface. The altitude of a cone is the perpendicular segment from the vertex to the plane of the base. The height is the length of the altitude. In a right cone, the altitude contains the center of the base. The slant height of a right cone is the distance from the vertex to the edge of the base.
A list of formulas is on p. 727.
|
|