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長方體有6個面,相對的兩個面完全相等,有12條棱,8個頂點,至少有4個面是長方形. 正方體有6個面且相等,有12條棱,8個頂點. 圓柱有三個面,上、下兩個平面圖形是圓,另外一個是側面叫做曲面. 圓椎有兩個面,有一個底面是圓形,另外一個是側面叫做曲面.
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