Question Provided: I am confused on this one.

if A is proportional to B

then A = B

what they are saying is that triangle 1 = triangle 2

so the values are the same just put whatever value is shown on triangle A unto triangle B

hence,

X=15

false

step-by-step explanation:

rulers and compasses arent required in order to bisect an angle because when bisecting angles, you're making a "half circle" and considering in order to bisect an angle it wouldn't be straight, you wouldn't need either of the two