Answer: Richter Scale
Step-by-step explanation:
The length is going to be 15.5. Please message me if you want the explanation
Answer:
Step-by-step explanation:
1/100
Answer:
down below
Step-by-step explanation:
straight lines are 180 degrees and you have 2 angles on a line. one of which is 72 and the other is unknown. It is solved for below.

your missing degree is 108.
i may not be right, if i'm not i am very sorry.