Help pls guysss the bottom awnser is 6 btw

What two criteria are needed for triangles to be similar

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

Solving algebraic equations 2m+3=11