a figure that can be folded over along a straight line so that the result is two equal halves which are then lying on top of one another with no overlap is said to have a line of symmetry.which of the following figures has only one line of symmetry?A

a figure that can be folded over along a straight line so that the result is two equal halves which are then lying on top of one another with no overlap is said to have a line of symmetry.which of the following figures has only one line of symmetry?A
a figure that can be folded over along a straight line so that the result is two equal halves which are then lying on top of one another with no overlap is said to have a line of symmetry.which of the following figures has only one line of symmetry?
A.square
B.circle
C.equilateral triangle
D.isosceles triangle
E.rectangle

a figure that can be folded over along a straight line so that the result is two equal halves which are then lying on top of one another with no overlap is said to have a line of symmetry.which of the following figures has only one line of symmetry?A
此题问的是,下列哪一个图形有且只有一条对称轴.
A 正方形,B 圆形,C 等边三角形 D 等腰三角形 E 长方形或矩形
答案很明显啊,选D呗

C 选C 句子太复杂，不好写