If you mean which alphabet letter, an L has one right angle; a T has a right and left acute angle.
1 acute angle = 1 acute angle
acute angle
a
The letter "R".
an acute angle
It could be capital letter A
an acute angle
A is one possible answer.
an acute angle -David L.
my answer is R
any right triangle will have an acute angle in it
It is an obtuse triangle having 1 obtuse angle and 2 different acute angles Or it is an isosceles triangle having 1 obtuse angle and 2 equal acute angles