圆柱的截面

GeoGebra 命令及参数

1. Intersect(yAxis, xAxis) → A
2. Point(zAxis) → O
3. Point(xAxis) → K
4. Point(xAxis) → I
5. Plane(I, K, O) → p
6. PointIn(p) → CenterOfNormalAngle
7. Point(zAxis) → B
8. Circle(CenterOfNormalAngle, 0.25, p) → d
9. Point(yAxis) → J
10. Plane(I, J, K) → q
11. Circle(CenterOfNormalAngle, 0.25, p) → c
12. Line(CenterOfNormalAngle, xAxis) → g
13. Intersect(g, c) → i_{2}, i_1
14. CircleArc(CenterOfNormalAngle, i_{2}, i_1, p) → ArcForPlaneAngle
15. OrthogonalLine(CenterOfNormalAngle, g, p) → h
16. Point(ArcForPlaneAngle) → NormalAngleHandle
17. Segment(CenterOfNormalAngle, NormalAngleHandle) → NormalSeg
18. Point(zAxis) → C
19. Cylinder(A, C, 1) → TheCylinder, e, f, b
20. PointIn(b) → D
21. OrthogonalPlane(D, NormalSeg) → PerPenPlane
22. IntersectPath(PerPenPlane, TheCylinder) → k