Geometric Shapes: Lines, Angles, and Figures
Point, Ray, Line, Line Segment
http://www.5min.com/Video/How-to-Identify-Geometric-Figures-286300550
Definitions for line terms: point, ray, line, and line segment are explained.
Oblique, Parallel and Perpendicular Lines
http://www.youtube.com/watch?v=QBmw8sOF6VQ
Definitions for line terms: oblique lines, parallel lines, and perpendicular lines are explained.
Types of Angles
http://www.youtube.com/watch?v=QBmw8sOF6VQ
Definitions and labeling of angle terms, including: acute, right, obtuse, and straight. For more on angle relationships, check out the ANGLES tab.
Plane Figures: Polygons, Triangles, Quadrilaterals
http://www.youtube.com/watch?v=U607zLq7l04
Definitions of shapes that are grouped as polygons, triangles, and quadrilaterals.
Solid Figures:
http://www.youtube.com/watch?v=wlvn4anF-fI&feature=related
Definitions of 3-dimentional shapes.