Please help I am very confused

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?

Find measure angle 1 and measure angle 3 in the kite the diagram is not drawn on the scale

What expression is equivalent to (84+16)