基础名词 - 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

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

三角形

(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

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

a shape with five or more points, representing a star in the sky

星星

(geometry) a round object that every point on its surface has the same distance from its center

球体, 球面

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

立方体

(geometry) a solid or hollow shape with two circular bases at each end and straight parallel sides

圆柱

(geometry) a three dimensional shape with a circular base that rises to a single point

圆锥

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

金字塔

a three-dimensional geometric shape with six rectangular faces, resembling a box or a rectangular prism

长方体, 矩形棱柱

either half of a sphere

半球

(geometry) a solid figure with flat sides and two parallel ends of the same size and shape

棱镜

(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

(geometry) a flat shape with four flat sides, two of which are parallel

梯形

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 mark or an object formed by two short lines or pieces crossing each other

十字

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

螺旋

a four-sided shape with two pairs of equal-length adjacent sides

菱形, 风筝

a flat geometric shape consisting of three straight sides and one right angle

直角三角形, 具有直角的三角形

(geometry) a figure with four sides and two opposite angles more than 90° and two of less than 90°

菱形, 菱角

(geometry) a round 3D shape like a ball that is slightly flattened at the top and bottom points

扁球体, 椭球体

any half of a circle

半圆

a geometric shape with five angles and five straight sides

五边形

(geometry) a closed shape with six straight sides and six angles

六边形

a seven-sided plane shape consisting of seven line segments or edges that meet at seven interior angles

七边形

(geometry) a polygon consisting of eight straight sides and eight angles

八边形

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

九边形

(geometry) a flat polygon with ten straight sides and ten angles

十边形

a five-pointed star

五角星, 五角形

(geometry) a flat star-shaped figure with six points that can be formed by making equilateral triangles on each side of a regular hexagon

六角星, 六角形星

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

之字形, 之字形（几何学）

(geometry) a flat figure consisting of eleven straight sides and eleven angles

十一边形

(geometry) a flat figure that consists of twelve sides and twelve angles

十二边形

a polygon with thirteen sides and thirteen angles

十三边形

a rectangular figure that has unequal adjacent sides with arched angles

长方形,椭圆形长方体, round-edged rectangle

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

a line or shape that is not straight and bends gradually

曲线, 弧

(mathematics) any of the pair of geometric figures such as lines or planes which do not meet or intersect

平行线

(geometry) a closed plane curve that has two focal points

椭圆