2 o'clock on a wristwatch.
A roof (:
An angle formed as a see-saw is a real life example.
cycle foces
Roof of a house
a wooden gate
a yield sign
blinds or window panes
the rooftops of most houses or buildings
The hands of a clock at 5 to 12
The hands of a clock at 5 o'clock
it is when you like dogs
There are many examples that shows the exterior of an angle. The most common example would be of a four way stop.