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正弦函数图像
Author:
李红
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
四邊形的特性
柱體建築師
三位數除以一位數（二）
【案例】2018年全国1卷理科12题
Discover Resources
七巧板(底板)_李樂雯
Parallel lines
p10-7
GGB4
HW question locus 6
Discover Topics
Boxplot
Circumcircle or Circumscribed Circle
Ratios
Secant Line or Secant
Conditional Probability