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Activity

Texas Instruments: Angle Sum in Triangles Proof: Rotation and a Parallel Line

Curated by ACT

This investigation uses Cabri Jr. and a cleaver rotation of a triangle to "prove" that the angles in a triangle add up to 180. This could be used to reinforce triangles and paralled lines as well as introduce the concept of rotating an object.

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Concepts
angles, triangles
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Additional Tags
angle sum in triangles, angle sum in triangles proof: rotation and a parallel line, ti, texas instruments
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Classroom Considerations
  • Knovation Readability Score: 3 (1 low difficulty, 5 high difficulty)
Common Core
HSG-SRT.C.7