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quadrilaterals 3

Author:iedc

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【案例】2018年全国1卷理科12题
四邊形的特性
直角坐標平面上的旋轉變換
判斷球體
兩組對邊相等和有直角的四邊形

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aaa aaa aaa aaa
球面與截平面的關係
P54_3d
極座標
Copie de Comparing fractions using number lines and rectangles

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Equations
Circumcircle or Circumscribed Circle
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