CAN SOMEONE PLEASE HELP ME ASAP PLEASEEEE and show how you got the answer, please!?!? I WILL GIVE BRAINLIEST!!!!!!

Answer:
12 is 70 and 13 is 80
Step-by-step explanation:
So for the first triangle, you have to subtract 50 and 60 to 180 and you get 70 make it a whole triangle. You do the same for the second and you get 80.