Question

mark the angles and sides of each pair of triangles to indicate that they are congruent. Triangle BDC is approximately equal to Triangle MLK

Answer 1

If two triangles are congruent the corresponding sides and angles need to be congruent.

Corresponing sides are:

BD and ML

DC and LK

CB and KM

Corresponding angles are:

B and M

D and L

C and K

You mark those corresponding angles and sides as follow: