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2018_2019学年高中数学第一章空间几何体1.2.3空间几何体的直观图情境导学素材新人教A版必修2.doc

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11.2.3 空间几何体的直观图【情境导学】美术与数学有着千丝万缕的联系,在美术图中,空间图形或实物在画板上画得既有立体感,又要表现出各主要部分的位置关系和度量关系.空间图形或实物如何在画板上表示出来?如何反映它们的主要特征呢?这就是空间几何体的直观图,画好空间几何体的直观图应首先从水平放置的平面图形入手.一个水平放置的正六边形,你看过去视觉效果是什么样子的?每条边还相等吗?该怎样把这种效果表示出来呢?

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