牛仔帽

几何画板及绘图内容加载中，请稍等……

2017-08-25 17:32

圆多边形解析几何

所属专题 surface 3D

这个范例演示了一个牛仔帽的几何构造。它涉及圆和多边形的概念。通过使用Surface、Random Variables等GeoGebra命令，可以动态地调整帽子的形状和大小。适合高中几何和解析几何课程使用。

GeoGebra 命令及参数

Surface((r / 2 * cos(u)), (r / 2 * sin(u)), v, u, (-π), π, v, (-1.5 * r), ((-r)) / 4) → cou
Surface((((r * fnez(u, v)) * cos(u)) * cos(v)), ((((r * e) * fnez(u, v)) * sin(u)) * cos(v)), ((r * fnez(u, v)) * sin(v)), u, ((-π)) / 2, π / 2, v, ((-π)) / 2, π / 2) → tete2
Surface(((r * cos((ly * (u - 0.5)) - ey)) * cos(((oy1 * sin((π * u))) * v) + hy)), (((r * e) * sin((ly * (u - 0.5)) - ey)) * cos(((oy1 * sin((π * u))) * v) + hy)), (r * sin(((oy1 * sin((π * u))) * v) + hy)), u, 0, 1, v, 0, 1) → oeil1
Surface(((r * cos((ly * (u - 0.5)) + ey)) * cos(((oyp2 * sin((π * u))) * v) + hy)), (((r * e) * sin((ly * (u - 0.5)) + ey)) * cos(((oyp2 * sin((π * u))) * v) + hy)), (r * sin(((oyp2 * sin((π * u))) * v) + hy)), u, 0, 1, v, 0, 1) → oeil2
Surface((((r + 0.05) * cos(u)) * cos(v)), ((((r + 0.05) * e) * sin(u)) * cos(v)), ((r + 0.05) * sin(v)), u, π / 2, (π * 3 / 2), v, ((-π)) / 2, π / 2) → cheveux
Surface((((-(r + 0.05)) * fn(u)) * cos(u)), ((((r + 0.05) * e) * fn(u)) * sin(u)), (((-(r + 0.05)) * abs(u)) * v / 2), u, (-π), π, v, 0, 1) → foulard
Surface((((r + 0.05) * cos(u)) * cos(v)), ((((r + 0.05) * e) * sin(u)) * cos(v)), ((r + 0.05) * sin(v)), u, (-π), π, v, π / hch, π / 2) → cheveux2
Surface((u * cos(v)), ((e * u) * sin(v)), cos(u)^(3) - ((ac * ((bc * sin(v)^(4)) + cc)) * cos((3 * u))) + hc + r, u, 0, π, v, (-π), π) → chapeau