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congruent (AAA) 2
Author:
Ricky Chan
GeoGebra
New Resources
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
拼砌四邊形
画直线等分三角形的面积
Discover Resources
微積分
天干與地支
linear function
p04 fixed distance from a line
test1
Discover Topics
Conditional Probability
Rectangle
Rational Numbers
Angles
Triangles