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II. Modified true or false. Write true if the statement is valid and false if otherwise. If the statement is false, underline the word(s) that make it wrong.
11. Two distinct lines are intersecting if they have exactly two points in common 12. A ray is the common endpoint of the two non-collinear rays.
13. Two angles whose sum of the measures is 90 are complementary angles.
14. Angles in a linear pair are complementary. discont if they have a common side.​