ΔAXY is similar to ΔABC. triangles ABC and AXY that share vertex A where point X is between points A and B and point Y is between points A and C.
Which of the following expressions could be used to determine the length of segment AB?
AB equals AX times AC over AY
AB equals AX times AY over AC
AB = AY
AB = AX
Please help, I really want to understand this. Thanks!