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圓錐截痕
Author:
羅驥韡 (Pegasus Roe)
Topic:
Conic Sections
GeoGebra
New Resources
異分母分數減法
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
三位數除以一位數（二）
算柱 (兩位數)
Discover Resources
翰林B4講p192_類1
青字歌
分步骤展示作图过程样例
两角和的正弦公式几何证明（改进）
龙形曲线-分形龙2
Discover Topics
Percentages
Addition
Conditional Probability
Arithmetic Operations
Rotation