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gyzpa 拋物面鏡的反射
Author:
均一
GeoGebra
New Resources
拼砌四邊形
兩位數加法
球体的体积推导（优化版）
【案例】圆柱体内放置一个大球六个小球
第八周作业
Discover Resources
橢圓
Triangle fixed height
蝴蝶公式
塗色01
gjc91v127 三角形旋轉
Discover Topics
Pyramid
Distributions
Quadratic Functions
LCM and GCD
Pythagoras or Pythagorean Theorem