How can you identify the three types of mirrors without touching them?

(N/A) We can identify the three types of mirrors by observing the image formed when we look into them from a close distance:
$(i)$ If the image is of the same size and erect, it is a $Plane$ mirror.
$(ii)$ If the image is magnified (bigger size) and erect, it is a $Concave$ mirror.
$(iii)$ If the image is diminished (smaller size) and erect, it is a $Convex$ mirror.