An equilaterial triangle has all three sides equal. Raising the roof will increse the two vertical sides, but if the bottom is not widened, it will reamin the original lenght. Only two sides are now equal. No longer equilateral /
It is 2in a half any absolute value is always the same except for if your number is negative if so then it would be the opposite the absolute value of -2 in a half would be 2in a half hope this helped