I think it’s b, if it not please let me know!
<span>15.1, 15.2, 15.3
-</span>Lucy ☃︎
Answer:
10. 123º
13. 65º
Step-by-step explanation:
For number 10, a straight line is equal to 180º so all we have to do is subtract 57 (the number that we're given) from 180
For number 13, vertical angles are always congruent (the same) so we know that it's 65º
