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parallelogram
Author:
iedc
GeoGebra
New Resources
三半圓間的相切圓(Codex╱2026.10.07)
Earth with coastline
世界平面地圖 (Codex╱2026.10.07)
Claude 解幾何題
美國國旗 (Codex 版)
Discover Resources
三角形的邊長關係
底圖為圓，縱切面為正方形
n 次方根
向量比換面積比
橢圓規Ellipsograph (Trammel of Archimedes)
Discover Topics
Planes
Numbers
Fractions
Geometric Distribution
Upper and Lower Sum or Riemann Sum