Two of them and they must add up to 90 degrees
3
3
Two. Two acute angles in a right triangle.
2:.
One dummies.....
Just the one.
None
A triangle can have up to all three acute angles. An equilateral triangle has three- sixty degree angles, which are acute.
Only one of them
If its a triangle then just the one but if it is a square or a rectangle then 4 of them.
A right triangle cannot contain any obtuse angles. The right angle represents 90° and the total of all three angles must be 180°. There is only 90° left for the remaining two angles, so neither can be obtuse (greater than 90°).
No right triangle can have any obtuse angles inside it.