Can someone answer this math problem and show your working

What is the value of x? enter your answer in the box. (cm)

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation

What other information do you need to prove triangle dac=bca by asa