| No. | Name | Definition | Algebra |
|---|---|---|---|
| 1 | Point A | A = (5.93, -0.8) | |
| 2 | Point B | B = (6.7, -3.3) | |
| 3 | Point C | C = (3.2, -2.83) | |
| 4 | Point D | D = (-4.27, -3.93) | |
| 5 | Circle c | Circle with center C through D | c: (x - 3.2)² + (y + 2.83)² = 56.96 |
| 6 | Line a | Line through C, A | a: -2.03x + 2.73y = -14.25 |
| 7 | Line b | Line through A perpendicular to a | b: -2.73x - 2.03y = -14.59 |
| 8 | Point E | intersection point of c, b | E = (1.91, 4.6) |
| 9 | Line d | Line through E, C | d: 7.44x + 1.29y = 20.15 |
| 10 | Line e | Line through E perpendicular to d | e: -1.29x + 7.44y = 31.77 |
| 11 | Point F | intersection point of a, e | F = (16.62, 7.15) |
| 12 | Circle f | Circle through B, A, F | f: (x - 13.52)² + (y - 0.16)² = 58.43 |
| 13 | Point G | intersection point of c, f | G = (6.8, 3.8) |
| 14 | Point H | center of f | H = (13.52, 0.16) |
| 15 | Angle α | Angle between C, G, H | α = 90° |