# Lill's Angle Trisection

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This Demonstration shows Lill's angle trisection. The angle to be trisected is marked with a green arc.

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Contributed by: Izidor Hafner (September 2017)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

Only in the third snapshot is the condition fulfilled.

Reference

[1] D. Kurepa, *Higher Algebra, Book 2* (in Croatian), Zagreb: Skolska knjiga, 1965 pp. 1072–1074.

## Permanent Citation