Answer:
10. m<1 = 95°
11. m<2 = 85°
12. m<3 = 95°
Step-by-step explanation:
10. m<1 = 180° - 85° = 95°
11. m<2 = 180° - m<1 = 85°
12. m<3 = 180° - 85° = 95
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