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12.1 Representations of Three-Dimensional FiguresIsometric View – A corner view of three-dimensional geometric solids on two dimensional paper.
Orthographic View – A drawing that shows the top, left, front and right views of a solid.
Cross Section – The intersection of a solid and a plane.
12.2 Surface Areas of Prisms and CylindersLateral Faces – Faces that are not basesLateral Edges – The intersection of the lateral facesAltitude – A perpendicular segment that joins the planes of the bases.Height – The length of the altitude.
Axis – The segment with endpoints that are centers of the circular bases.
12.3 Surface Area of Pyramids and ConesRegular Pyramid – A pyramid that has a base that is a regular polygon and the altitude at the center of the baseSlant Height – The height of each lateral face
Right Cone – A cone where the altitude and axis are the sameOblique Cone – A cone where the altitude and axis are different
12.4 Volumes of Prisms and Cylinders
12.5 Volumes of Pyramids and Cones
12.6 Surface Areas and Volumes of Spheres
Great Circle – A circle that contains the center of the spherePoles – The endpoints of a diameter of a great circleHemisphere – The two congruent halves of a sphere
12.8 Congruent and Similar Solids