7. 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
