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congruent (SSS) 5
Author:
Ricky Chan
GeoGebra
New Resources
Fibonacci Clock
Claude 解幾何題
中華民國國旗 (Codex╱2026.10.06)
算柱 (兩位數)
美國國旗 (Codex, 2026.10.06)
Discover Resources
哈里斯螺旋 - 框線版 (Harriss Spiral)
circle
随机模拟实验(撒豆子估算π)的副本
以「時」和「分」報時 的複本
小正多边形在大正多边形内的滚动(边长相等)
Discover Topics
Prism
Logic
Quadrilaterals
Variance
Conic Sections