1. This triangle is scalene.
2. This triangle is isosceles. Two angles are equal.
3. This triangle is equilateral, all sides are equal.
4. This triangle is equilateral, all angles are equal.
I hope this helps bc I don't know if I'm right or wrong but I still hope that it still works
Triangle has 180 degree in total, in order to get x, you use 180-70-75=35
Small box volume is
12*2*7 3/4=186cubic inches
big box height =12/80%=15
big box volume=15*2*7 3/4=232.5cubic inches
difference=232.5-186=46.5 cubic inches