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内外弦图1
Author:
张书真
Topic:
Pythagoras or Pythagorean Theorem
GeoGebra
New Resources
長方體平面投影 (Codex版)
近似值：有效數字
Nested spiral octagon
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
Discover Resources
光的折射（光线自右下向左上）
circle
Copy of 軸對稱
反比例函数3456
结果10以内加法
Discover Topics
Variance
Line Segment
Isosceles Triangles
Sequences and Series
Scalene Triangles