Addendum to “A 20-30-130 triangle”

Community Mathematics Centre, CoMaC (2016) Addendum to “A 20-30-130 triangle”. At Right Angles, 5 (2). pp. 66-67. ISSN 2582-1873

Text - Published Version
Download (244kB) | Preview


We had offered a trigonometric solution, making use of the sine rule and numerous standard trigonometric identities. At the end of the article we posed the question of finding a pure geometry solution.

Item Type: Articles in APF Magazines
Authors: Community Mathematics Centre, CoMaC
Document Language:
Uncontrolled Keywords: angle chasing, isosceles, equilateral, circum-circle, pure geometry
Subjects: Natural Sciences > Mathematics
Divisions: Azim Premji University > University Publications > At Right Angles
Full Text Status: Public
Publisher URL:

Actions (login required)

View Item View Item