Explain the similarities and differences between payroll tax and property tax

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

How can you construct perpendicular lines and prove theorems about perpendicular lines

This is about circle theorems. someone asap : (