the measure of how steep a line is, found by dividing the change in height by the change in horizontal distance

斜率
(geometry) a part of a circle, which is curved

弧, 圆的一部分
the space between two lines or surfaces that are joined, measured in degrees or radians

角度, 角度 (测量)
a unit for measuring angles, defined by the angle made when the radius of a circle is laid along its edge

弧度, 测量角度的单位,定义为圆的半径沿其边缘放置时所形成的角度
an angle measuring exactly 90 degrees

直角, 90度角
an angle that measures between 0 and 90 degrees, which is less than a right angle (90 degrees)

锐角, 小于90度的角
one of a pair of opposite angles made by two intersecting lines, which are always equal

垂直角, 对顶角
pairs of angles that share a common side and vertex in a polygon or between intersecting lines

连续角, 邻角
(geometry) a flat shape consisting of three or more straight sides

多边形, 由三条或更多直线边组成的平面形状
(geometry) any flat shape with four straight sides, the opposite sides of which are equal and parallel to each other

平行四边形, 任何有四条直边的平面形状,其对边相等且彼此平行
(geometry) a flat figure with four straight sides and four angles

四边形, 有四条直边和四个角的平面图形
a geometric curve formed by the intersection of a plane with two cones, resulting in two symmetrical branches

双曲线, 双曲线曲线
(geometry) a symmetrical open curve that is similar to the path of an object thrown into the air passes till it falls back to earth

抛物线, 抛物曲线
a geometric shape with five angles and five straight sides

五边形, 五角形
a type of triangle with all three sides of equal length

等边三角形, 等边三角形
a flat geometric shape consisting of three straight sides and one right angle

直角三角形, 有一个直角的三角形
a triangle in which all three interior angles are less than 90 degrees

锐角三角形, 锐三角形
a type of triangle that has two sides of equal length and two angles of equal measure

等腰三角形
a type of triangle that has all three sides of different lengths

不等边三角形, 三边长度都不相等的三角形
a triangle in which one of the interior angles is greater than 90 degrees

钝角三角形, 有一个角大于90度的三角形
a three-dimensional geometric shape that has a rectangular base and four triangular faces that meet at a single point called the apex

矩形金字塔, 底面为矩形的金字塔
a three-dimensional geometric shape with two parallel circular bases connected by a curved surface at a right angle to the bases

直圆柱, 圆形底面的直角圆柱
a solid figure with a circular base and a vertex that is perpendicular to the center of the base

正圆锥, 底面为圆的正圆锥
a small circle whose center moves around the circumference of a larger circle

本轮, 次级圆
the longest side of a right-angled triangle, opposite the right angle, and defined as the side opposite the right angle in a right-angled triangle

斜边, 直角三角形中最长的边,与直角相对
the side of a geometric shape, usually the one considered as the bottom, from which the height is measured

底边, 基底边
a straight line from one side of a round object, particularly a circle, passing through the center and joining the other side

直径, 直径
the length of a straight line drawn from the center of a circle to any point on its outer boundary

半径, 半直径
a point where two or more lines, edges, or rays meet to form an angle, or the point at which the sides of a polygon intersect

顶点, 顶点
the total length of the external boundary of something

周长
(geometry) the length of the external boundary of a curved shape, especially a circle

周长
the measurement of a piece of land or a flat surface

面积
the total area that the surface of a three-dimensional object occupies

表面积, 表面
the amount of space that a substance or object takes or the amount of space inside an object

体积, 容量
a straight line that a curve approaches indefinitely but never intersects, characterizing the limiting behavior of the curve

渐近线, 渐近线
a straight line that touches a curve or surface at exactly one point, known as the point of tangency

切线, 切線
a measuring instrument used to measure and draw angles

量角器, 分度规
a line that divides a shape into two congruent parts

对称线, 对称轴
a series of numbers in which each term after the first is found by multiplying the previous term by a fixed, non-zero number

几何级数, 等比数列
one-fourth of a circle, formed by two perpendicular radii and the connecting arc

象限, 四分之一圆
an angle formed between two sides of a polygon that lies inside the shape

内角, 内部角度
a straight line segment that connects two points on the edge of a circle

弦, 和弦
(of a straight line) joining opposite corners of a flat shape at an angle

对角线的
(in geometry) describing shapes of the same size and form

全等, 一致的
having an equal distance from each other at every point

平行的, 等距的
(of a line) intersecting two or more other lines at different points

横向的, 相交的
(of lines or planes) intersecting each other at a 90 degree angle

垂直的, 成直角
to divide something into two equal parts

平分, 对半分
(geometry) to move a shape or figure from one position to another without rotating, resizing, or otherwise altering its shape

平移, 移动
数学和逻辑SAT |
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