One and the two others are acute angles
3. Any triangle, whether it's obtuse or acute will always have 3 angles. Pink23
First: Sides are not acute or obtuse. ANGLES are acute or obtuse. An acute triangle has to have all angles acute. Examples: 60, 60, 60 70, 60, 50 45, 50, 85 45, 45. 90 30, 60, 90 But if one of the angles is obtuse (>90 degrees), then the other two must be acute. Of course, *this* triangle would not be called an acute triangle, because one of its angles is abtuse; it would be called an obtuse triangle.
It doesn't matter if a triangle is isosceles, scalene, obtuse, acute... There are always 3 angles in a triangle (which add up to 180).
Every triangle must have at least 2 acute angles, otherwise it is impossible to make the 3 sides connect.
Just the one and the other two angles must be acute.
There is one obtuse angle, and the other two are acute angle because in all the whole triangle is 180 degrees.
It has 1 obtuse angle and 2 acute angles and the 3 interior angles add up to 180 degrees
An equilateral triangle has three sides of equal length, and an acute angle of 60 degrees in each corner. There are no obtuse angles.
A hexagon has NO acute angles all the angles are obtuse on a hexagon.
There can be 10 obtuse angles. If there are no reflex angles there can by up to three acute angles (I think).