An obtuse triangle
Every triangle must have at least two acute angles. The third one can be acute, right (90 degrees), or obtuse.
A right-angled triangle.
A acute angled scalene triangle.
Acute Triangle
An acute isosceles triangle
An obtuse triangle
A triangle with 3 acute angles is an acute triangle. All the angles in an acute triangle are acute.
Every triangle must have at least two acute angles. The third one can be acute, right (90 degrees), or obtuse.
A right-angled triangle.
An acute triangle.
A acute angled scalene triangle.
An acute triangle can be an isosceles triangle, but it doesn't have to be. An isosceles triangle can be an acute triangle, but it doesn't have to be.
It is an obtuse scalene triangle
That would be a right triangle. Any triangle that has a right angle in it is a right triangle.
An equilateral triangle.
It would be an acute-angled triangle, but it's missing a degree!