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Gardner, Martin – Scientific American, 1979
Discusses some theorems and properties of figures produced when circles are tangent to one another. (GA)
Descriptors: Game Theory, Games, Mathematics, Models
Peer reviewedWenninger, Magnus J. – Mathematics Teacher, 1978
A method is given for the analysis of geodesic domes involving plane geometry. The method shows how to calculate all necessary angles and chords, given the length of one side. (MP)
Descriptors: Geometry, Instruction, Learning Activities, Mathematical Enrichment
Peer reviewedNatsoulas, Anthula – Journal of Computers in Mathematics and Science Teaching, 1989
Gives definitions of taxicab geometry and the MacDraw format for graphing. In the world of taxicab geometry, movement through the plane is along horizontal and vertical paths. Describes specific application to conic sections, including circle, ellipse, parabola, and hyperbola. Lists five references. (YP)
Descriptors: Computer Graphics, Computer Uses in Education, Geometric Concepts, Geometric Constructions
