Similar Triangle Challenge

For each figure below, find the length of sides "x" and "y".
Check your answers (rounded to 3 decimal places) in the boxes below the figures.
(Javascript required for ansers to be checked.)

1)
2 3 4 5 x y

x =
y =


2)
3 y 4 5 6 x

x =
y =


3)
2 4 5 7 x y

x =
y =


4)
4 3 4 x y z

x =
y =
z =


5)
3 4 5 x y * *

(Angles marked * are equal. Can you find the similar triangles?)
x =
y =