John D. Cook personal blog
A triangle whose interior angles sum to zero
In hyperbolic geometry, the sum of a the interior angles of a triangle can be any value less than π. If the sum is zero the triangle has area π.
- Points
- 136
- HN comments
- 63
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- 1
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On Hacker News
| Submitted | Title on HN | Points | Comments |
|---|---|---|---|
| Nov 29, 2025 | A triangle whose interior angles sum to zero by tzury | 136 | 63 |
