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勾股定理：射影无字证明
Author:
math Ku
Topic:
Geometry
,
Pythagoras or Pythagorean Theorem
GeoGebra
New Resources
找出對稱軸
三位數除以一位數（二）
柱體建築師
【案例】2018年全国1卷理科12题
第八周作业
Discover Resources
小学数学
四邊形的特性
異分母分數加減
操場
旋轉體：8y² = x²(1 - x²)
Discover Topics
Means
Trigonometric Functions
Ellipse
Diagrams
Trapezoid