The smallest positive number divisible by all the denominators of a list of fractions is called

Least Common Multiple(LCM) is the smallest positive number divisible by all the denominators of a list of fractions.The LCM of two numbers is the smallest number (not zero) that is a multiple of both.For example multiples of 3 are 0,3,6,9,12,15,18,21,24 etc.. then multiples of 4 are 0,4,8,12,16,20,24,28 etc.So the common multiple of 3 and 4 is 12.

7.) The coordinates of the given rectangle are O(0, 0), S(0, h), T(b, h), W(b, 0)

8.) The coordinates of the given square are O(0, 0), S(0, a), T(a, a), W(a, 0)

9.) The coordinates of the given square are S(-b/2, -b/2), T(-b/2, b/2), W(b/2, b/2), Z(b/2, -b/2)