Bisecting an angle using a ruler

Jagathapu, Kasi Rao (2018) Bisecting an angle using a ruler. At Right Angles, 7 (2). pp. 30-32. ISSN 2582-1873

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Abstract

ere is a simple way to bisect a given angle using the simplest and most familiar geometrical instrument: a ruler (see Figure 1). It works for any angle other than a straight angle (i.e., a 180 o angle). While the procedure is simple to carry out, justifying it using the theorems of geometry may prove challenging to some students. Here is the method. Given ∡ABC with vertex B, place the ruler so that one edge is aligned along ray BA and the opposite edge overlaps with the given angle. Using a pencil, draw a line m along the other edge; see Figure 2 (a). (For the vertex and line labels, please look at Figure 3; it depicts the construction schematically.) Next, place the ruler so that one edge is aligned along ray BC and the other edge overlaps with the given angle; draw a line n along

Item Type:	Articles in APF Magazines
Authors:	Jagathapu, Kasi Rao
Document Language:	Language English
Uncontrolled Keywords:	Angle, bisection, ruler
Subjects:	Natural Sciences > Mathematics
Divisions:	Azim Premji University - Bengaluru > University Publications > At Right Angles
Full Text Status:	Public
URI:	http://publications.azimpremjiuniversity.edu.in/id/eprint/1616
Publisher URL:	http://apfstatic.s3.ap-south-1.amazonaws.com/s3fs-...

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