The corner of a desk.
a wooden gate
There are many examples that shows the exterior of an angle. The most common example would be of a four way stop.
the rooftops of most houses or buildings
it is when you like dogs
The exterior angle formed by the letter "V". Notice how this shape is commonly used; for example the wings on a stealth bomber or an arrowhead have this shape.
the top angle of an A
a Chair a door ect...
A roof (:
An angle formed as a see-saw is a real life example.
cycle foces
a yield sign
a wooden gate
Roof of a house
A fjord is a real world example of a fjord! They exist in the real world.
blinds or window panes
2 o'clock on a wristwatch.
There are many examples that shows the exterior of an angle. The most common example would be of a four way stop.