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5 squares
Author:
johnmayhk
GeoGebra
Purple points are mid-points of corresponding line segments. Drag blue points to change the size and orientation of squares. Are two red line segments perpendicular to each other always?
New Resources
拼砌四邊形
球体的体积推导(优化版)
兩位數加法
兩位數除以一位數(二)
【案例】圆柱体内放置一个大球六个小球
Discover Resources
正三角形尺规作图
Clock
對數函數圖
PMC 2018-19
双动点异速折线运动分段函数绘制
Discover Topics
Trigonometry
Mathematics
Natural Numbers
Symmetry
Coordinates