Answer asap
triangle abc is congruent to triangle def .which statement must be true about the triangles?
ac = de
cb = de
m∠c=m∠f
m∠f=m∠b

the answer is d

step-by-step explanation:

i think it is 18

step-by-step explanation:

60

step-by-step explanation:

every triangle measures a total of 120 degrees. you have to find angle c. we know that isosceles triangles angles are equal. 60 degrees plus 60 degrees gives you 120.