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17 Cards in this Set
- Front
- Back
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Polyhedron
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solid formed by polygons
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face
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flat side of a polyhedron
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edge
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intersection of two faces
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vertex
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intersection of 3 or more faces
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regular polyhedron
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only if each face is a regular polygon, each face is congruent to the other faces, faces meet at the vertex at the same way, then it is regular polyhedron.
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prism
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two faces are the bases that are congruent and parallel ploygons. it has lateral faces which are parallelograms
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right prism
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lateral edges are perpendicular to the bases
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oblique prism
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not a right prism
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altitude
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any segmenent that is perpendicular to the bases (height)
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great circle
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half a the base of a hemisphere
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axis
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connects the centers of the bases of a cylinder
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the volume of a prism or cylinder is
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base area times hieght
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the volume of a cone or a pyramid
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1/3 base ares times hieght
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volume of a sphere
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4/3πr^3
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volume of a hemisphere
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2/3πr^3
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surface area of a sphere
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4πr^2
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surface area of a hemisphere
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3πr^2
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