Sirius 几何演示

GeoGebra 命令及参数

1. Point(Circle[Midpoint[A, B], (Distance[A, B] * sqrt(3) / 2), Segment[A, B]]) → C
2. Tetrahedron(A, B, C) → a, D, edgeCD, edgeBD, faceABC, faceACD, faceABD, faceBCD, edgeAC, edgeAB, edgeBC, edgeAD
3. Polygon(D, A, B) → t1, b, d, a_1
4. Polygon(C, D, A) → t2, a_2, c, d_1
5. Centroid(t1) → E
6. Centroid(t2) → F
7. Midpoint(D, A) → G
8. Midpoint(D, B) → H
9. Midpoint(A, B) → I
10. Circle(G, H, I) → e
11. Midpoint(D, C) → J
12. Midpoint(C, A) → K
13. Circle(J, G, K) → f
14. Line(J, F) → g
15. Point(f) → L
16. Point(e) → M
17. Line(L, F) → h
18. Intersect(h, f, 1) → N
19. Segment(L, N) → i
20. Line(M, E) → j
21. Intersect(j, e, 1) → O
22. Segment(M, O) → k
23. Segment(N, M) → l
24. Segment(N, E) → m
25. Segment(N, O) → n
26. Segment(L, M) → p
27. Segment(L, E) → q
28. Segment(L, O) → r
29. PointIn(t1) → Pointt1_1
30. PointIn(t1) → Pointt1_2
31. PointIn(t1) → Pointt1_3
32. PointIn(t1) → Pointt1_4
33. PointIn(t1) → Pointt1