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Activity: Exploring Characteristics of Triangles
Go to: http://www.teacherlink.org/.../home.html (opens a new window)
Description: Students draw triangles and explore the classification of each using the measures of interior angles and lengths of sides. In the extension activities, the students further explore and generalize a formula for the sum of the interior angles of convex polygons. A link to a sample sketch is included.
Technology Type: Sketchpad 
Author: teacherlink.org--Center for Technology and Teacher Education
Language: English 
Cost: Does not require payment for use

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Courses: Math 7 Triangles
Geometry Triangles