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Mathematics 20 Online
OpenStudy (happykiddo):

Jamie is writing a proof of the theorem stated below. Theorem: The sum of interior angles of a triangle is 180°. Which theorem will he most likely use in the proof? Vertical angles are congruent. Supplements of congruent angles are congruent. Alternate interior angles formed by parallel lines and their transversal are congruent. If two angles of a triangle are congruent, the sides opposite these are congruent.

OpenStudy (happykiddo):

OpenStudy (anonymous):

|dw:1335981467086:dw|Alternate interior angles formed by parallel lines and their transversal are congruent.

OpenStudy (happykiddo):

thanks i got that too

OpenStudy (anonymous):

Thank you for the medal.

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