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厚會聚透鏡 Thick Convergent Lens
Author:
W.L. Wong, Albert
GeoGebra
New Resources
兩位數除以一位數（一）
拼砌四邊形
第八周作业
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
Discover Resources
Quiz on Projection of a Line Segment on a Plane 投影：測驗
五位數
square & Triangle
circle
沪教版练习册7.4第4题
Discover Topics
Interest Calculation
Root
Solids or 3D Shapes
General Quadrilateral
Angles