What is the answer to this problem?

How can we find the measure of an exterior angle if we know the measurement of an interior angle

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

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