Answer:
10 inches
Step-by-step explanation:
Given the side length if ABCD = 20 inches.
The midpoint of the sides ABCD implies the point that divides each of the sides into two equal parts.
Midpoint of side AB = BC = CD = AC = [tex]\frac{20}{2}[/tex] = 10 inches
So that, the side length of the square to be formed by joining the midpoints of the sides of ABCD is 10 inches.
