Verified Answer :

  1. acute means all angles are less than 90
    right triangle mean that one angle is 90 degrees
    it is not posible for all angles to be less than 90 and one angle is 90 so this is not possible

    8. equilateral triangle has all equal angles
    180 degrees per triangle
    3 angles
    180/3=60
    each angle=60
    acute means lal angles less than 90
    all angles=60
    60<90
    true