学术类雅思 (5分及以下) - Geometry

a figure, either hollow or solid, with six equal square sides

立方体

a shape that is wide in the middle and narrow at both ends

一个椭圆, 椭圆形

a shape with four equal, sloping straight sides, forming a point at the top and another at the bottom

菱形, 钻石

the space between two lines or surfaces that are joined, measured in degrees or radians

角度

a row of people or things behind each other or next to each other

行

(geometry) an element that only has position, with no size or dimension

点, 几何点

a solid object with a square base and four triangular sides joined to a point on the top

金字塔

(geometry) any of the two-dimensional faces of a three-dimensional figure

表面, 面

a shape that consists of two curved lines at the top and a V shape at the bottom

心形, 心形状

a completely round, plain shape

圆

a shape with four equal straight sides and four right angles, each measuring 90°

正方形

anything with a curved top and parallel sides

拱门, 弯曲

(geometry) a shape that consists of a line alternating its direction to left and right

之字形, 之字形（几何学）

any half of a circle

半圆

(geometry) a curved shape or design that gradually winds around a center or axis

螺旋

a line or shape that is not straight and bends gradually

曲线, 弧

an object that has a flat, round, and circular shape

盘, 圆片

one half of the earth divided by the equator

半球

prominent rounded projection or segment, often seen in various waveforms or patterns

叶, 瓣

(geometry) a flat shape with four right angles, especially one with opposing sides that are equal and parallel to each other

矩形, 长方形

(geometry) a flat shape consisting of three straight sides and three angles

三角形

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

锐角, 尖角

an angle that measures more than 90 degrees but less than 180 degrees

钝角

an angle measuring exactly 90 degrees

直角, 九十度角

an angle that measures exactly 180 degrees, which is the same as a straight line

直角, 平角

(geometry) an arbitrary straight line that passes through the center of a symmetrical object or around which an object spins

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