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陳允杰 橢圓反射
Author:
陳允杰
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
【案例】圆柱体内放置一个大球六个小球
柱體建築師
三位數除以一位數（一）
Discover Resources
HELLO
海市蜃樓現象
複合形體的表面積(凹形)
第一冊
定理介紹：切線與半徑 | Tangent and Radius
Discover Topics
Pythagoras or Pythagorean Theorem
Optimization Problems
Integral Calculus
Distributions
Statistical Characteristics