Pls only tell me the answer for why they are related thx

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

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