This is the last one, can u help me

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

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

If chord ab is congruent to chord cd, then what must be true about ef and eg?