a book
a yield sign
a pizza slice yumm!(;
The hands of a clock at 5 to 12
A right angle triangle always has 2 acute angles within it.
One example I know is an ice cream cone.
A Spy Plane is an example of Acute Triangle.... >> njoy
A roof (:
An angle formed as a see-saw is a real life example.
cycle foces
a wooden gate
Roof of a house
blinds or window panes