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推移矩陣（y 方向）
Author:
羅驥韡 (Pegasus Roe)
New Resources
illusiion 6 平行线错觉
線性規劃
错觉平行线
no.1
埕瑋_幾何證明_p16_實力演練2
Discover Resources
三角形平行四边形综合运用
優良作品4
Tangent of a Circle 圓的切線
禪繞畫2
簡易證明_圓&相似形
Discover Topics
Arithmetic
Straight Lines
Trapezoid
Similar Triangles
Inequalities
