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Mathematics, 03.12.2020 19:50 alanaruth3389

ABC with exterior angle 4 is given = 180 degrees becaused the angles for a linear pair. This can be written as M angle 4 = 180 degrees - m angle 3 by the subtractions property of the quaulity since = 108 degrees beause the the triangle sum theorem, this new equation can be written as M angle 4 = (m angle 1 + m angle 2 + m angle) - m angle 3 due to the symplify the results in m angle 4 = m angle 1 + m angle 2. what are the missing parts of the proof? 3

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