Yes
NO
Three different side lengths and three different acute interior angles.
Yeah
no its not
Yes, an acute triangle can also be scalene.
A scalene triangle is a triangle that has three unequal sides.
No.
Yes
It is an acute angled scalene triangle.
In an acute triangle, all three angles are acute.
No triangle is a quadrilateral.
NO
Three different side lengths and three different acute interior angles.
Yes to both
An acute scalene triangle has none. An acute isosceles triangle has one and an [acute] equilateral has three.
A scalene triangle or an equilateral triangle