Hi there!
So if BC and DA are the same, then BA and CD are also the same...
The only one that’s left is BD.
Therefore, the shortest side is BD.
More details need to be provided to answer this question
-17
an integer is a negative or positive whole number
a rational number is a number that can be turned into a fractions...can be either positive or negative.
so ur subsets are : rational number and integer
Option a is correct answer.
x= 9