The word HIDE is a symmetric word. Find its axis of symmetry. Also find some more symmetric words showing their lines of symmetry.

What is the image of a point in an axis of reflection symmetry? 

What is the image of a line segment in an axis of reflection symmetry?

The image of an equilateral triangle with side $4 \mathrm{cm}$ in an axis of reflection symmetry               

What is the image of a rectangle with length $4 \mathrm{cm}$ and breadth $3 \mathrm{cm}$ in an axis of reflection symmetry?      

In the adjoining figure, the point $B$ is the reflection of point $A$ in the reflecting line $m$ then $AB$ is _____ to $m$

In the adjoining figure,the point $B$ is the reflection of point $A$ in the reflecting line $m$ then the image of point $C$ is the point _____ .

In the adjoining figure, the point $B$ is the reflection of point $A$ in the reflecting line $m$ then line $m$ is called _____ .