me thank yu sae yu make 2 triangels . . . both hav the same base=bottom av square with sides 2 yunits long . . . 1 triangel go tu top av square & other go half-wae up=senter . . . Area=differ tween 2 triangels. Both hav same base=2 wide. Big triangel hav hite=2, base=2, so area=2*2/2=2 . . . Small triangel hav hite=1, base=2, so area=2*2/2=1 . . . differ=2-1=1 . . . .