Each of the 3 interior angles is less than 90 degrees
A scalene acute triangle is a triangle where all three sides have different lengths and all three angles are less than 90 degrees.
Yes
NO
Three different side lengths and three different acute interior angles.
Usually, but not necessarily.
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
Yes to both
Three different side lengths and three different acute interior angles.
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