What is the smallest subset 365 can fit into ?

The set of the number of days that a year can have.

Step-by-step explanation:

It is possible to have many examples that satisfy this description, but an example is:

- The set of the number of days that a year can have.

Let A be the set of the number of days that a year can have, the subsets are 365, and 366 (Leap Year)

So, A = {365, 366}.

step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1