Chapter 12.3: Surface Area of Pyramids and Cones Flashcards

1
Q

Pyramid

A

a polyhedron in which the base is a polygon and the lateral faces are triangles that have a common vertex.

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2
Q

Regular Pyramid

A

a pyramid is regular if its base is a regular polygon and of the segment from the vertex to the center of the base is perpendicular to the base.

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3
Q

Thm. 12.4 - Surface Area of a Regular Pyramid

A

the surface area, S, of a regular pyramid is S=B+.5Pl, where B is the area of the base, P is the perimeter of the base, and l is the slant height.

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4
Q

Circular Cone

A

a solid that has a circular base and a vertex that is not in the same plane as the base.

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5
Q

Right Cone

A

one in which the vertex lies directly above the center of the base.

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6
Q

Thm. 12.5 - Surface Area of a Right Cone

A

the surface area, S, of a right cone is S=3.14r2 + 3.14rl, where r is the radius of the base and l is the slant height of the cone.

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