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8条相切的抛物线
Author:
赵林
Topic:
Parabola
GeoGebra
New Resources
兩位數加法
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
球體建築師
兩組對邊相等的四邊形
Discover Resources
圓 點 直線
square construction
Quiz on Solving Right Triangles (Finding Side Lengths) 解直角三角形：測驗1（求邊長）
Euler Line 1
扇形弧長公式3
Discover Topics
Geometric Transformations
Tree Diagrams
Matrices
Probability
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