Final answer:
To determine if a shower door has safety glazing, look for a marking in the lower corner of the glass which indicates safety features such as breaking into small, rounded pieces rather than sharp shards.
Step-by-step explanation:
To determine if a shower door has safety glazing, you should look for a marking in the lower corner of the glass. This marking is an industry standard and indicates that the glass has been treated to increase its safety features. Safety glazing makes glass less likely to cause injury if it's broken because it's designed to break into small, rounded pieces rather than sharp shards. Always use gloves, goggles, or safety aprons when instructed to handle glass, and if the glass is broken, be sure to clean it up with a dust pan and broom, never with your bare hands.