Which rule describes the composition of transformations that maps figure abcde to figure a”b”c”d”e?

When are triangles considered similar? a. corresponding angles are equal andcorresponding sides are proportionalb. corresponding angles are proportional andcorresponding sides are equalc. corresponding angles are equal orcorresponding sides are proportionald. corresponding angles are proportional orcorresponding sides are equal select the best answer from the choices providedmark this and retumsave and exitnext

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

What are the excluded values? m+5/mn+3m