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(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
a geometric figure with eight triangular faces, twelve edges, and six vertices
八面体, 八面體
a three-dimensional figure with twelve regular pentagonal faces, thirty edges, and twenty vertices
十二面体, 具有十二个正五边形面的三维图形
a three-dimensional figure with twenty equilateral triangle faces, thirty edges, and twelve vertices
二十面体, 具有二十个等边三角形面的三维图形
the measure of how much a curve or surface deviates from being straight or flat at a specific point
曲率, 弯曲度
(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 curve formed by the intersection of a plane with two cones, resulting in two symmetrical branches
双曲线, 双曲线曲线
a solid shape resembling a donut or ring, made by spinning a circle around a line that does not cut through the circle
环面, 环
the section of a solid shape that remains after a parallel cut, featuring a flat top and a bottom that is larger or smaller than the top
截头体, 平截头体
a curved shape with narrow points at the ends that appears wider in the middle, like the shape of the moon in its first and last quarters
新月, 月牙
a surface in three-dimensional space formed by moving a straight line along a helix
螺旋面, 螺旋曲面
a mathematical shape formed by the region between two concentric circles in a plane
环, 圆形冠
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 structure made of strips of wood, metal, or other rigid material arranged in a criss-crossed, grid-like pattern
格子, 网格
a rectangular figure that has unequal adjacent sides with arched angles
长方形,长椭圆形, round-edged rectangle
(geometry) a figure with four sides and two opposite angles more than 90° and two of less than 90°
菱形, 斜方形
| IELTS学术词汇 (分数8-9) |
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