下列图形中，哪一个只有 1 条对称轴？

它不会直接告诉你答案，而是问你卡在哪一步看看 AI 是怎么陪你一步步弄懂这道题的

完整解法

1. Determine the number of lines of symmetry for each given shape

A general parallelogram has $0$ lines of symmetry.
A regular hexagon has $6$ lines of symmetry.
A regular octagon has $8$ lines of symmetry.
An isosceles trapezium has exactly $1$ line of symmetry (passing through the midpoints of the parallel sides).

2. Identify the correct option

The isosceles trapezium is the only shape with exactly $1$ line of symmetry.

答案

Trapezium (option 4)

AI 分析，可能出错

用 AI 批改，圈出写错的那一步，并自动将你的薄弱点存入错题本，形成你的错因库。