The domain of the following relation R {(3, -2), (1, 2), (-1, -4), (-1, 2)} is A. {-1, 1, 3}
b. {-1, -1, 1, 3}
с. {-4, -2, 2, 2}
d. {-4, -2, 2}

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab