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象限

Author:李春培

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【案例】2018年全国1卷理科12题
第八周作业
直角坐標平面上的旋轉變換
兩位數加法
兩組對邊相等和有直角的四邊形

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Area of polygon
尋找三角形的內切圓
圖形D
单晨答重庆李琳
两角和的正弦公式

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Variance
Fractal Geometry
Bar Chart or Bar Graph
Planes
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