Alex CHIK

Introduction to Rectangular Coordinates 直角坐標簡介
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Distance between Two Points 兩點距離
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Loci 軌跡
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Equation of Circles 圓方程
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Quiz on Solving Quadratic Inequalities 解二次不等式：測驗 (v2018)
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Ratio & Proportion 比與比例
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Concept of Ratios(2) 比的概念(2)
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Quiz on Solving Compound Inequalities 解複合不等式：測驗
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Conditions for Similarity of Triangles (1) 相似三角形的判別條件(1)
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Conditions for Similarity of Triangles (3) 相似三角形的判別條件(3)
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Conditions for Similarity of Triangles (2) 相似三角形的判別條件(2)
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Quiz on Finding Unknowns in Similar Rectangles 求相似長方形中的未知量：測驗
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Pythagoras Theorem and its Converse 畢氏定理及其逆定理
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Quiz on Percentage Profit & Loss 盈虧百分率測驗
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HCF & LCM of Three Numbers by Prime Factorization 以質因數分解法求三個數的HCF和LCM
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HCF & LCM of Two Numbers by Prime Factorization 以質因數分解法求兩個數的HCF和LCM
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Meaning of LCM 最小公倍數的意義
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Cost, Marked Price & Selling Price 成本、標價與售價
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Quiz on Solving Right Triangles (Finding Angles) 解直角三角形：測驗2（求角度）
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Prime & Composite Numbers 質數與合成數
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Quiz on Multiplication of Polynomials 多項式的乘法：測驗
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Quiz on Combining Like Terms 合併同類項：測驗
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Rounding Quiz (Combined) 小數位及有效數字：同步測驗
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Rounding Quiz (Significant Figures) 有效數字：測驗
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