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Contents 1. Compass & Straightedge 2. Triangle: Points & Lines 3. Economical Constructions 4. 3D Workshop 5. Wire Puzzles 6. Quadratic Functions 7. Conics and Other Curves 8. Linkages 
Economical ConstructionsIn this section we review some very basic elementary constructions studied in the first lessons of geometry. Rather unexpectedly, it turns out that these standard constructions can be improved: the same result can be obtained faster, that is, by drawing a smaller number of lines (straight lines and circles).

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