posted Jan 27, 2015, 8:59 AM by mdreyfus@ctkschool.org
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updated Sep 11, 2016, 3:03 PM by kmcmillan@ctkschool.org
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Today we're going to launch into a series of dynamic geometry activities. By using tools that reflect the underlying concepts of geometric figures, we'll develop a deeper understanding.
Geometer's Sketchpad RefresherComplete the following: - Launch Geometer's Sketchpad (GSP5)
- Draw a point, line, ray, and line segment
- Construct an angle and measure that angle.
Things to notice: - Notice how GSP simulates points, lines, rays, and segments
- Pay careful attention to how angles are named. The order of points listed describes where the vertex and legs of the angle are
- Notice how GSP will always measure the convex angle (less than 180º)
Investigation: Complementary and Supplementary AnglesDownload the GSP file here. Using the included sketch, identify pairs of angles that are... - Complementary: they add up to 90º
- Supplementary: they add up to 180º
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 Updating... ĉ kmcmillan@ctkschool.org, Jan 27, 2015, 9:00 AM Complementary_Supplementary.gsp (4k) kmcmillan@ctkschool.org, Jan 27, 2015, 9:00 AM
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