Based on the definition of similar quadrilaterals, the measure of side MN is: 14.1 units.
What are Similar Quadrilaterals?
If two quadrilaterals are similar to each other, then the measure of their corresponding sides will have a ratio that is equal. This means they will have proportional side measures.
Since we are told that quadrilaterals GHIJ and KLMN are similar to each other, then their corresponding sides will have measures that are proportional to each other.
Therefore:
IJ/MN = GJ/KN
IJ = 35
MN = ?
GJ = 52
KN = 21
Substitute:
35/MN = 52/21
Cross multiply:
MN(52) = (35)(21)
MN(52) = 735
MN = 735/52
MN = 14.1 units
Learn more about similar quadrilaterals on:
https://brainly.com/question/16261621
#SPJ1