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GeoGebra
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直角坐標平面上的旋轉變換
兩組對邊相等和有直角的四邊形
近似值：有效數字
第八周作业
三位數除以一位數（二）
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Quiz on Factorization of Quadratic Polynomials (Table Method) 因式分解一元二次多項式(表格法)：測驗
[問題] 點 (4,7) 到 3x+4y = 0 的距離為何？
與三半圓相切之圓
SLOPE
动态演示面动成体：圆柱、圆锥、圆台、球
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Secant Line or Secant
Angles
Combinatorics
Reflection
Plane Figures or Shapes