boyd/usilton. a pyramid is a polyhedron in which one face (base) can be any polygon and the other...
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![Page 1: Boyd/Usilton. A pyramid is a polyhedron in which one face (base) can be any polygon and the other faces (lateral) are triangles. A regular pyramid](https://reader035.vdocuments.us/reader035/viewer/2022062409/5697c0121a28abf838ccbe80/html5/thumbnails/1.jpg)
Boyd/Usilton
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A pyramid is a polyhedron in which one face (base) can be any polygon and the other faces (lateral) are triangles.
A regular pyramid is a pyramid whose base is a regular polygon and whose lateral faces are congruent isosceles triangles.
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A cone is a solid that has one base and a vertex that is not in the same plane as the base.
A right cone has an altitude that is a perpendicular segment from the vertex to the center of the base.
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PyramidL.A. = ½ pℒp= perimeter of baseℒ = slant height
S.A. = L.A. + BB= area of base
ConeL.A.= ½ •2πr •ℒ or πrℒ
S.A. = L.A. + B