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slide9
Author:
tao sun
GeoGebra
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平行線的判定
第八周作业1
折扣
第八周作业3
常见四边形是否是双心四边形
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三角測量
題九
zentangle
二階行列式-平行四邊形的面積
S3 WS4.3 Q05(3D圖)
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Addition
Linear Equations
Fractions
Right Triangles
Translation