gerard is trying to prove that the diagonals in any parallelogram bisect each other. what is the best choice for the first line in his proof?
a) let ∠aeb be congruent to ∠dec.
b) let ac and bd be the diagonals of a parallelogram.
c) let point e be the midpoint of segments ac and db.
d) let de be congruent to eb and ae be congruent to ec.

Option: B is the correct answer.

( B) AC and BD be the diagonals of a parallelogram ).

Step-by-step explanation:

The best choice for the first line in the proof:

Gerard is trying to prove that the diagonals in any parallelogram bisect each other.

so for the proof of anything we have to firstly write the information given to us.

so in the following proof we have to assume that AC and BD be the diagonals of a parallelogram and later work on it to prove the asked expression.

Hence option B is correct.

because 1.2 isnt half of 6 duh

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.