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Mathematics 49 Online
OpenStudy (anonymous):

need help! Which of the following is a valid reason for stating that <1 is congruent to <2? Angles 1 and 2 are adjacent because they share a common side B. Angles 1 and 2 are both right angles because the lines are perpendicular C. Angles 1 and 2 are supplementary angles because they form a straight line D. Angles 1 and 2 are vertical angles because they are opposite sides of an "X\

OpenStudy (anonymous):

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