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Stupel, Moshe; Oxman, Victor; Sigler, Avi – International Journal of Mathematical Education in Science and Technology, 2017
We present a geometrical investigation of the process of creating an infinite sequence of triangles inscribed in a circle, whose areas, perimeters and lengths of radii of the inscribed circles tend to a limit in a monotonous manner. First, using geometrical software, we investigate four theorems that represent interesting geometrical properties,…
Descriptors: Geometry, Geometric Concepts, Investigations, Mathematical Concepts
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Oxman, Victor; Stupel, Moshe; Segal, Ruti – International Journal of Mathematical Education in Science and Technology, 2017
An important and interesting area in the study of triangle geometry is the related issue of extrema problems and inequalities. These problems play a significant role in the mathematics study program in high school. In tasks such as these, the difficulty level is high when one does not know in advance what the expected answer is. When one knows…
Descriptors: Mathematics Instruction, Geometric Concepts, Teaching Methods, Secondary School Mathematics