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Some links are repeated for use with more than one lesson..

10.1  Drawing Three-Dimensional Objects

http://mathforum.org/workshops/sum98/participants/sanders/Geom3D.html
This page explains the geometry behind drawing three-dimensional objects.

10.2  Perspective Drawing

http://mathforum.org/sum95/math_and/perspective/perspect.html
This page explains how to draw in perspective.

http://www.how-to-draw-and-paint.com/perspective-drawing.html
This site explains perspective drawing through a series of stages.

10.3  Surface Area of Prisms and Cylinders

http://www.explorelearning.com/index.cfm?method=cResource.dspDetail&ResourceID=349
This page contains a gizmo to explore the surface area of prisms and cylinders.

http://hotmath.com/help/gt/genericprealg/section_9_4.html
This site contains practice problems on finding the surface area of prisms and cylinders.

10.4  Volume of Prisms and Cylinders

http://library.thinkquest.org/C0110248/geometry/menvolcyclinder.htm
This page gives the formulas for finding volume of prisms and cylinders along with examples.

http://www.explorelearning.com/index.cfm?method=cResource.dspDetail&ResourceID=191
This site contains a gizmo that shows how height changes volume of prisms and cylinders.

10.5  Surface Area of Pyramids and Cones

http://www.algebralab.org/lessons/lesson.aspx?file=Geometry_3Dpyramidcone.xml
This page explains pyramids and cones and gives formulas to find surface area and volume.

http://library.thinkquest.org/C0110248/geometry/menareapyramid.htm
This page has examples on finding the surface area of pyramids and cones.

10.6  Volume of Pyramids and Cones

http://www.algebralab.org/lessons/lesson.aspx?file=Geometry_3Dpyramidcone.xml
This page explains pyramids and cones and gives formulas to find surface area and volume.

http://library.thinkquest.org/C0110248/geometry/menvolpyramid.htm
This page has examples on finding the volume of pyramids and cones.

10.7  Spheres

http://mathworld.wolfram.com/Sphere.html
This page discusses the sphere and the different parts of it.

http://www.math.rice.edu/~pcmi/sphere/
This site has links to different pages explaining the geometry of the sphere.

10.8  Volumes of Similar Solids

http://www.regentsprep.org/Regents/Math/volumes/simVol.htm
This page discusses the volumes of similar solids.

10.9  Cross Sections

http://www.learner.org/channel/courses/learningmath/geometry/session9/part_c/index.html
This page defines cross sections and has practice problems with solutions.