Pls help me with problems 20- 26

Triangle inequality theorem state if each set of three numbers can be the lengths of the sides of a triangle. 1. 9, 8, 22. 2. 5,10,12. 3. 7,10,22. 4. 4,11,12. 5. 11,9,10. 6. 10,4,19. 7. 3,12,10. 8. 4,3,2. 9. 6,5,13. 10. 7,12,20. me .

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?