Shape
Copyright David & Cynthia Thomas, 2009
Triangle Recipes--Directed Activity: Side-Side-Side
Focus |
Construct a triangle given three segments satisfying the Triangle Inequality Theorem. |
Technologies |
· Straightedge-and-compass · The Geometers Sketchpad |
References |
· Euclid’s Elements Proposition 8 http://aleph0.clarku.edu/~djoyce/java/elements/bookI/propI8.html · Euclid of Alexandria http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Euclid.html |
Background |
Figure 1.8: Side-Side-Side
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Tasks |
1. Using both straightedge-and-compass and The Geometers Sketchpad, construct a triangle with sides equal in length to the segments indicated in Figure 1.8. 2. Explain and justify your constructions and the final result. |