1. which biconditional is not a good definition? (1 point)
a whole number is odd if and only if the number is not divisible by 2.
an angle is straight if and only if its measure is 180°.
a whole number is even if and only if it is divisible by 2.
a ray is a bisector of an angle if and only if it splits the angle into two angles.

2. use the law of detachment to draw a conclusion from the two given statements.
i can go to the concert if i can afford to buy a ticket.
i can go to the concert.

a. i can afford to buy a ticket
b. i cannot afford to buy a ticket
c. if i can go to the concert, i can afford the ticket.
d. not possible