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Example 1: Circles and Polygons

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Discovering Math: Grades 03-05: Geometry [49:00]
35 Segments
Names for Geometric Shapes [06:25]
Introduction [01:13]
Example 1: Circles and Polygons [02:01]
Example 2: Quadrilaterals [01:48]
Example 3: Three-Dimensional Shapes [01:22]
Properties of Geometric Figures [07:47]
Introduction [01:32]
Example 1: Two-Dimensional Shapes%X97Architecture [02:20]
Example 2: Three-Dimensional Shapes%X97Pyramids and Prisms [01:49]
Example 3: Bilateral Symmetry%X97Living Things and Shapes [02:05]
Altering Shapes [06:54]
Introduction [01:54]
Example 1: Subdividing Shapes%X97Homes and Gardens [01:30]
Example 2: Combining Shapes - Domes and Designs [01:55]
Example 3: Changing Shapes-Flags and Origami [01:34]
Congruent and Similar Shapes [07:53]
Introduction [02:17]
Example 1: Congruence - Pyramids and Pictures [01:37]
Example 2: Similarity - Ape's Shapes and Photos [01:39]
Example 3: Congruence and Similarity - Paris [02:17]
Motion Geometry [06:34]
Introduction [01:33]
Example 1: Translations, or Slides - Dinosaur Walking [01:44]
Example 2: Rotations, or Turn - Dragon Falling [01:03]
Example 3: Reflections or Flips - Dinosaur and Dragon Parts [02:13]
Lines and Angles [04:37]
Introduction [01:19]
Example 1: Parallel Lines [01:03]
Example 2: Perpendicular Lines [00:52]
Example 3: Intersecting Lines [01:21]
Maps and Drawing Scales [07:40]
Introduction [01:45]
Example 1: Description of Map and Scale [01:36]
Example 2: Diversity of Maps and Scale [01:54]
Example 3: Calculation of Distance [02:24]

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Segment Description

Some two-dimensional shapes do not have any straight sides. Look at your bicycle wheels. Other two-dimensional shapes have straight sides and angles. These are called polygons. Some polygons are named according to the number of straight sides and angles they have such as triangles and octagons.

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Grades: 3-5   |   Copyright: 2005