Shape
Copyright David & Cynthia Thomas, 2009
More Triangle Recipes--Directed Activity: Angle-Angle-Side
Focus |
Construct a triangle given two sides and the included angle. |
Technologies |
· Straightedge-and-compass · The Geometers Sketchpad |
References |
· Euclid’s Elements · http://aleph0.clarku.edu/~djoyce/java/elements/bookI/propI4.html · Euclid of Alexandria http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Euclid.html |
Background |
Figure 1.17: Angle-Angle-Side
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Tasks |
1. Using the angles and segment in Figure 1.17, straightedge-and-compass, and The Geometers Sketchpad, construct a triangle using Angle-Angle-Side. 2. Using logic, justify your constructions and the final result. |