Venn图示例 by Dr Brooks
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该范例演示了Venn图的绘制方法。涉及的核心数学概念包括集合与交集、并集等。通过使用Polygon、Point、Circle等GeoGebra命令,可以构造出Venn图。适合初中及以上学生学习集合的概念。
GeoGebra 命令及参数
Polygon(A, D, C, B) → poly1, a, d, c, bPoint(xAxis) → EPoint(xAxis) → FCircle(E, G) → eCircle(F, H) → fIf(Mod[tagg, 2] ≟ 0, "white", "green") → colgIf(Mod[tagh, 2] ≟ 0, "white", "green") → colhIf(Mod[tagi, 2] ≟ 0, "white", "green") → coliIf(Mod[tagj, 2] ≟ 0, "white", "green") → coljMod(tagg, 2) → tagg2Mod(tagh, 2) → tagh2Mod(tagi, 2) → tagi2Mod(tagj, 2) → tagj2