Answer:
you have it right, its 60. since all sides are equal, then all angles must be equal. triangles are 180, so 180 divided by 3= 60
Step-by-step explanation:
3.742, I believe is the answer
Answer:
21
Step-by-step explanation:
-9=9
9+12=21
Answer:
i think it is b
Step-by-step explanation: