Question

Which biconditional is NOT a good definition?
A. A whole number is even if and only if it is divisible by 2.
B. A whole number is odd if and only if the number is not divisible by 2.
C. An angle is straight if and only if its measure is 180.
D. A ray is a bisector of an angle if and only if it splits the angle into two angles.

Answer 1

@dape

Answer 2

Go through each one, does the first one sound reasonable?

Answer 3

to me C sounds reasonable

Answer 4

If you mean that C sounds like a reasonable answer, then yes :)

Answer 5

so C is the corret choice

Answer 6

Yeah.