Provide reasons for the statements.

given: < 1 and < 3 are vertical angles.
prove: < 1 ~= < 3

below of the second picture is what would be used in the reasoning side of the question
for example : definition of supplementary angles, definition of a linear pair, substitution, subtraction property of equality, and definition of congruence.

The graph below shows the line of best fit for data collected on the number of cell phones and cell phone cases sold at a local electronics store on twelve different days. number of cell phone cases sold 50 * 0 5 10 15 20 25 30 35 40 45 number of cell phones sold which of the following is the equation for the line of best fit? a. y = 0.8x b. y = 0.2x c. y=0.5x d. y = 0.25x