Dear Parents,
Starting Wednesday 02/15/2012, we will begin Unit 7- Slices & Shadows.
Slices & Shadows
Students will be able to:
- Describe three-dimensional figures formed by translations and rotations of plane figures through space.
- Sketch, model, and describe cross-sections of cones, cylinders, pyramids, and prisms.
Vocabulary
Cross Section: a plane figure obtained by slicing a solid with a plane.
Oblique Figures: Prisms/cylinders with bases that are not aligned one directly above the other. Pyramids/cones with apex that are not aligned above the center of the base.
Polyhedron: a collection of polygons joined at their edges: each of these polygons is called a “face.”
Right Figures: Prisms/cylinders with bases that are aligned one directly above the other. Pyramids/cones in which the apex lies on the perpendicular line that passes through the center of the base.
Try http://intermath.coe.uga.edu/
