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3外切圓
Author:
陳兪宏
GeoGebra
New Resources
兩位數除以一位數（一）
兩位數加法
第八周作业
球體建築師
判斷球體
Discover Resources
test
立體圖形
拋物線 (丹德林球)
test P1的副本
乘法计时训练
Discover Topics
Exponent
Real Numbers
Integral Calculus
Random Experiments
Secant Line or Secant