Impossible triangle on rectangular dot sheet - another proof

Sircar, Swati (2019) Impossible triangle on rectangular dot sheet - another proof. At Right Angles (3). p. 110. ISSN 2582-1873

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In the TearOut for the November 2018 issue (page 43 Fun with Dot Sheets) Swati Sircar had ended with a tantalizing observation and the promise of proof. The observation was: Note that one type of triangle (with all three vertices on lattice points) is not possible. This is the equilateral triangle - An equilateral triangle can’t be drawn with lattice points as vertices. Elsewhere in this issue, Shailesh Shirali has provided four proofs of the same result. Here is one more from Swati!

Item Type: Articles in APF Magazines
Authors: Sircar, Swati
Document Language:
Uncontrolled Keywords: Mathematics, Triangle, Geometry
Subjects: Natural Sciences > Mathematics
Divisions: Azim Premji University > University Publications > At Right Angles
Full Text Status: Public
Publisher URL:

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