False, all triangles have 180 degrees and 3 angles, if you have 2 angles that are 90 degrees it will not be a triangle because there will be no room for another angle.
WARNING: If you meant at most two 90 degrees meaning all angles add up to 180 than the answer is yes.
The answer would be 4 Because four times two is eight Then eight plus six is fourteen Then fourteen divided by two is seven Then seven minus four is four
-- However, you should see that when the volume increases (doubles, in this case) you will divide the original pressure value by 2. Pressure and volume are inversely related.
