1) Right triangles have 1 right angle and 2 acute angles.
2) Acute triangles have 3 acute angles.
3) Right triangles have 3 right angles.
4) Obtuse triangles has 1 obtuse angle and 2 acute angles.
Obtuse means bigger than 90 degree angle which is the angle in the top both other angles are the same and smaller than 90 degrees so that makes them acute angles
