gklwong – Resources – GeoGebra

Similar Triangles
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「相似三角形」任务1
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「相似三角形」任务2
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Similar Triangles Task 4
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Slope of perpendicular lines
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Slope of a St. Line (formula)
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Scale Factor and Area Ratio
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In-centre, Circumcentre, Centroid and Orthocentre.
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Similar Triangles Task 2
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Similar Triangles Task 3
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Similar Triangles Task 1
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a(x-h)^2+k
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Compass and True Bearing
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找中點的坐標
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垂直線的斜率關係
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MC Qn49
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Slope 斜率 - 概念及定義 (3)
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Triangle: sides and angles
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以 Unit Circle 了解 Sine 的正/負
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Quadratic function
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Riemann Sum
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Pythagorean Means and RMS
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「相似三角形」任务3
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「相似三角形」任务5
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