True or false.
True or false. 9. Two rational numbers whose sum is 0 are called additive inverse of
10.To reduce a rational number to its standard form, divide its
numerator and denominator by their L.C.M.
11. If two parallel lines are cut by a transversal, then each pair of interior
angles on the same side of the transversal are supplementary.
12. The supplementary of a right angle is always right angle.