Quick Answer SSS
Proof
AC = DB
AB = DC
BC = BC This side is equal to itself and is common to both triangles.
Three sides of one triangle equal to 3 sides of the other means that the triangles are congruent. It is the Theorem you need.
Answer:
Can you teach me coeffeicients please honestly like you I need help on the
question to I don't blame you for having trouble on this questions
The unit rate is 5/1
15/3=5
3/3=1
It’s the 3rd one hopefully this helps