(geometry) a solid or hollow shape with two circular bases at each end and straight parallel sides
圆柱体, 圆柱形
(in geometry) a three-dimensional surface where all points are equidistant from a center
球体, 球面
(geometry) a closed shape with six straight sides and six angles
六边形, 六角形
(geometry) a three dimensional shape with a circular base that rises to a single point
圆锥, 几何圆锥
(mathematics) the ratio of the opposite to the adjacent side of a triangle that has one angle of 90°
正切, 切线
a straight line that starts at a point and extends infinitely in one direction
射线, 半直线
a type of triangle that has two sides of equal length and two angles of equal measure
等腰三角形
(geometry) a polygon consisting of eight straight sides and eight angles
八边形, 八边形
in geometry, a pattern or shape that exhibits a twisting or spiraling motion, often characterized by continuous, curved lines forming a rotational or helical design
漩涡, 螺旋
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
(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
a geometric shape with five angles and five straight sides
五边形, 五角形
(geometry) a line curved on a conical or cylindrical surface, like a spiral staircase in shape
螺旋线, 螺旋形
(geometry) a flat polygon with ten straight sides and ten angles
十边形, 十角形
a seven-sided plane shape consisting of seven line segments or edges that meet at seven interior angles
七边形, 七角形
a three-dimensional shape similar to a stretched or compressed sphere
椭球体
a three-dimensional geometric shape with six rectangular faces, resembling a box or a rectangular prism
长方体, 矩形棱柱
(geometry) a round 3D shape like a ball that is slightly flattened at the top and bottom points
球体, 旋转椭球体
(geometry) a solid figure with flat sides and two parallel ends of the same size and shape
棱镜
a solid shape made of flat sides that fit together along their edges
多面体, 由平面组成的立体形状，沿其边缘贴合
(geometry) a flat star-shaped figure with six points that can be formed by making equilateral triangles on each side of a regular hexagon
六角星形, 六芒星
an angle that measures either less or more that 90 degrees
斜角, 非直角
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
(geometry) the length of the external boundary of a curved shape, especially a circle
周长
