CD is the perpendicular bisector of both XY and ST, and CY = 20.

Question

Find XY.

16

20

18

14

Answer 1

Since CD is the perpendicular bisector of both XY and ST, it divides both lines in half.

So, CY = 20, which means that SY = 20 and TY = 20.

Since CD is the perpendicular bisector of XY, CX is equal to DX.

Therefore, CX = DX = 20/2 = 10.

Since XY = 2 * CX, XY = 2 * 10 = 20.

Therefore, XY = 20.

So, the correct answer is:

20