If the midpoints of the sides of a triangle are connected then the center of the triangle is part of the original triangle that is left. The triangle would break into three additional parts so the sides and angles would become smaller but the center would stay the same size.
So is 4 floors / 10 seconds If you have 60 seconds you can multiple 10 by 6 because 10×6=60 so you also have to multiple 4 by 6 4×6=24 and because it's descending it's 100-24= 76
