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梯形
Author:
kmskms2018
Topic:
Trapezium
GeoGebra
New Resources
拼砌四邊形
找出對稱軸
兩組對邊相等和有直角的四邊形
球體建築師
兩位數加法
Discover Resources
Scheimpflug image
三角形，邊上平分面積
祖暅之《綴術》：「緣冪勢既同，則積不容異。」
圓切三半圓
y=x sin(1/x) 的圖形
Discover Topics
Geometry
Translation
Algebra
Logic
Limits