Areas of triangles between two parallel lines with same base are equal : proof(?) by paper folding

K., Baburajan (2021) Areas of triangles between two parallel lines with same base are equal : proof(?) by paper folding. At Right Angles. pp. 21-30. ISSN 2582-1873

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Abstract

There are many methods to prove that the areas of triangles between two parallel lines and with the same base length are equal. Here, we are discussing the proof using a paper folding method. We give the geometric reasoning of the proof and follow it up with the implications of this in the paper folding activity. During the paper folding activity, some geometrical properties are used intuitively, and the questions alongside will serve to stimulate both observation as well as reasoning and deductive skills in the students. We hope that this approach illustrates that results which are observed during the paper folding are based on beautiful and rigorous mathematics.

Item Type: Articles in APF Magazines
Authors: K., Baburajan
Document Language:
Language
English
Uncontrolled Keywords: Area, Triangles, Parallel lines, Paper folding, Proof
Subjects: Natural Sciences > Mathematics
Divisions: Azim Premji University > University Publications > At Right Angles
Full Text Status: Public
URI: http://publications.azimpremjifoundation.org/id/eprint/3049
Publisher URL:

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