In the diagram, 21 = 22. 22= 23, and m/1-60°. Give the reasons that best support the following statements used to
show that m/3= 60°.
1.41 = 22 and 22 = 23; therefore, 41 = 23
2. m/1 = 60° and 21 = 23; therefore, 60° = m/3
3. 60°=m3; therefore, m/3 = 60°