Answer:
m 10 is : 123
m 15 is: 123
m 16 is : 57
Step-by-step explanation:
To get m 10: I subtracted 180-57 and got 123.
To get m 15: I did not need to do anything for that because m10 and m15 are the opposite of each other which means there angle measure is the same.
To get m 16: I did not need to do anything because m9 is the opposite of m 16 which makes their angle measure the same.
