The sum of angle 1 and angle 4 and the sum of angle 3 and angle 4 are each equal to 180 degrees by the definition of supplementary angles. The sum of angle 1 and angle 4 is equal to the sum of angle 3 and angle 4 _________________. Angle 1 is equal to angle 3 by the subtraction property of equality
Which phrase completes the proof?
by construction using a straightedge
by the definition of a perpendicular bisector
by the transitive property of equality.
by the vertical angles theorem

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someone help please

@DaBest21 ?

um @Mehek14 @pinkbubbles

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