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Reid, Bob – Mathematics Teacher, 1989
Relationships among the sides are developed for right triangles whose sides are in the ratios 1:3, 1:4, and 1:5. The golden ratio appears in the results which can be used in secondary mathematics. (DC)
Descriptors: Algebra, Discovery Learning, Geometric Concepts, Learning Activities

Laing, Robert A. – Mathematics Teacher, 1989
Three worksheets are provided to help secondary students explore relationships among the areas of a variety of similar figures constructed on the sides of right triangles. The activity is extended to include the relationship among the lengths of the sides of the right triangle. Included are several student worksheets. (DC)
Descriptors: Area, Class Activities, Discovery Processes, Geometric Concepts