Answer:
12
Step-by-step explanation:
hope it helps you on what ur doing
Answer:
I don't believe so because congruent shapes are exactly the same but a side measurement could be the same on a square and a triangle but those aren't congruent shapes
I hope this helped!
D=12
Because if you write down the equation 4x-8=40 and plug in 12. 4 times 12 is 48
. 48-8 equals 40