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P4 多邊形周界01 測試
Author:
makkei
GeoGebra
New Resources
Earth with coastline
中華民國國旗 (Codex╱2026.10.06)
世界平面地圖 (Codex╱2026.10.07)
小数 的副本
長方體平面投影 (Codex版)
Discover Resources
Apollonius Problem kissing coin problem
五年級
lms2702
畫圓
包含除法（整數或分數 ÷ 分數）的副本
Discover Topics
Quadratic Functions
Geometry
Upper and Lower Sum or Riemann Sum
Distributions
Translation