The following interactive smartphone app shows how the inner circle of a triangle is calculated using geometry.
The vertices of the triangle can be moved interactively with the mouse (or the finger on a touchscreen).
| Title | Inner circle of a triangle |
| Target audience | Self-learners |
| Platforms | Internet browser |
| Features | Full screen mode lossless magnification Large screens supported |
| License | Freeware (for non-commercial use) |
| Link | http://www.educational-animation.com/kis/Apps/Dreieck-Innenkreis/Dreieck.php |
Source
- Authoring tool: Adobe Animate
- JavaScript library: CreateJS