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三角形
Author:
鄭雅輿
GeoGebra
New Resources
判斷球體
拼砌四邊形
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
第八周作业
Discover Resources
Rectangle_03
gjh-f01-00 最短距離與對稱點
柯西不等式 (4)
DSE Circle-ACT03B Relationship Between Chords and Angles at Centre
动圆与两(相离)圆外切