Two.
2
It is 2
2
2 is.
Every triangle must have either 2 or else 3 acute angles. The least possible is 2.
Every triangle must have either 2 or 3 acute angles.
three
In plane geometry at least two angles must be acute in a triangle.
All acute triangles have 3 interior angles and 3 exterior angles. This is true for all triangles.
Yes it can. A triangle must have at least two acute angles.
No triangle is never acute in the sense that every triangle has at least two acute angles.