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三角形三邊長
Author:
vinnyya
GeoGebra
New Resources
柱體建築師
三位數除以一位數（一）
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
兩組對邊相等的四邊形
Discover Resources
S5 geometry
圓柱截痕
面積與周界活動
Ext angle cyclic quad
銳角三角：tan
Discover Topics
Isosceles Triangles
Polygons
Distributions
Piecewise Functions
Cylinder