数学（3）

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They are congruent triangles

它们是全等三角形。

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Constant refers to a quantity assumed to have a fixed value in a specified mathematical context

常数是指在特定数学背景下假定有固定值的量。

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The coordinate should show you your position

坐标能显示你的位置。

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The volume of a cylinder is calculated by multiplying the base area by its height

圆柱体的体积通过底面积乘以高度计算得出。

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In a fraction , the denominator represents the total number of equal parts

在分数中，分母表示相等部分的总数。

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Standard deviation is a statistical measure of the spread of data points

标准差是衡量数据点分布范围的统计量。

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A line has one dimension and a square has two

线有一个维度，正方形有两个维度。

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Students are required to evaluate the function at specific x-values

学生需要在特定的x值处对函数求值。

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The Northern Hemisphere experiences winter when the Earth is tilted away from the sun

当地球远离太阳倾斜时，北半球进入冬季。

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The graph shows a horizontal line indicating constant speed

图表中显示的水平线表示匀速。

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Hyperbola and ellipse are both types of conic sections

双曲线和椭圆均为圆锥曲线的类型。

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These two lines intersect at the origin point

这两条线相交于原点。

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In physics , invariance under rotation is a key concept in symmetry principles

在物理学中，旋转不变性是对称性原理的关键概念。

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The algorithm uses small increments to adjust the parameter values

该算法通过小幅度增量调整参数值。

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Companies aim to maximize profits while minimizing costs

企业旨在将利润最大化同时将成本最小化。

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Multiplying two negatives gives a positive result

两个负数相乘得到正数结果。

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The numerator of a fraction is the number above the line

分数的分子是横线上方的数字。

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A regular pentagon has five equal sides and five equal angles

正五边形有五条相等的边和五个相等的角。

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The perimeter of a rectangle is calculated as twice the sum of its length and width

长方形的周长计算公式为长加宽的和的两倍。