Mathematical Term/ Phrase/ Word SN 中文 Topic Topic Title 1 Accurate, Accuracy 精确度,准确性 1 Number 2 Acute Angle 锐角 4 Geometry 3 Add 加 1 Number 4 Adjacent 相邻的 4 Geometry 5 Adjacent sides 邻边 6 Trigonometry 6 Algebra 代数 2 Algebra 7 Algebraic expression 代数表达式 2 Algebra 8 Algebraic fraction 代数分式 2 Algebra 9 Alternate angles 内错角 4 Geometry 10 Alternate Segment Theorem 弦切角定理 6 Trigonometry 11 Angle 角 4 Geometry 12 Angle bisector 角平分线 4 Geometry 13 Anti-clockwise 逆时针 6 Trigonometry 14 Apex 顶点、最高点 3 Coordinate geometry 15 Approximation 近似值 1 Number 16 Arc 弧 5 Mensuration 17 Arc length 弧长 5 Mensuration 18 Area 面积 5 Mensuration 19 Arithmetic sequence 等差数列 1 Number 20 Assumed mean 假设均值 9 Statistics 21 Asymptote 渐近线 2 Algebra 22 Average 平均值 9 Statistics