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圓相切
Author:
一路梁
圓相切
GeoGebra
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【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
兩位數加法
sanjiaohanshu
近似值：有效數字
Discover Resources
錐體建築師 4
locus of a segment
仙后座找北極星 (底稿)
工具：DimensionArrows
tan900
Discover Topics
Linear Equations
Triangles
Isosceles Triangles
Means
Kite