三角形:[ sān jiǎo xíng ]
1.triangle
其它相关解释:
例句与用法:
1.三角形的三角之和等于180°.
The angles of a triangle total 180.
2.比较一下这些三角形的面积.
Compare the areas of these triangles.
3.他用红笔画出三角形.
He outlined the triangle in red.
4.她老是在三角形里头——象拿破仑的帽子一样.
She is always in a triangle- like napoleon's hat.
圆形:
1.rotundity
2.roundness
其它相关解释:
例句与用法:
1.正方形有四条边,而圆形没有边.
A square has four sides but a circle has no sides.
2.圆形区,圆形空间被圆所包围的一个平面区域
A planar region bounded by a circle.
3.圆形物体圆形物体；圆圈或环形轨道
Something of circular form; a circle or an orbit.
4.鲸背甲板船一种蒸汽船,带有圆形的船头和上甲板以遮蔽雨水
A steamship with the bow and upper deck rounded so as to shed water.
5.满月呈圆形.
The full moon has a circular form.
正方形:[ zhèng fāng xíng ]
1.square
其它相关解释:
例句与用法:
1.正方形有四条边,而圆形没有边.
A square has four sides but a circle has no sides.
2.小女孩在纸上画了一个正方形.
The little girl drew a square on the paper.
3.正方形有四个角儿; 立方体有八个角儿.
A square has four corners; a cube has eight.
4.正方形是二维的（平面的）,而正六面体则是三维的（立体的）.
A square is two-dimensional and a cube is three-dimensional.
长方形:[ cháng fāng xíng ]
1.rectangle
其它相关解释:
例句与用法:
1.这间屋子是长方形的.
This room is a rectangle.
2.梅花形五点排列将五个物体分别安排在一个长方形或正方形的四个边角和一个中心里
An arrangement of five objects with one at each corner of a rectangle or square and one at the center.