When two parallel lines are cut by a transversal, several angle relationships are established. Specifically, we can analyze the relationship between Angle 5 and Angle 1 by looking at their positions.
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Angle Relationship: If Angle 1 is an exterior angle and Angle 5 is an interior angle on the same side of the transversal, they are consecutive interior angles.
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Consecutive Interior Angles: The property states that consecutive interior angles are supplementary, meaning that their measures add up to 180 degrees: \[ \text{Angle 1} + \text{Angle 5} = 180^\circ \]
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Alternate Interior Angles: If Angle 1 and Angle 5 are both interior angles and lie on opposite sides of the transversal, they are alternate interior angles, which are congruent: \[ \text{Angle 1} = \text{Angle 5} \]
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Corresponding Angles: If Angle 1 is a corresponding angle to Angle 5 (meaning they are in the same relative position at the intersection of the parallel lines and the transversal), then they are also equal: \[ \text{Angle 1} = \text{Angle 5} \]
In summary, the relationship between Angle 1 and Angle 5 depends on their specific positions. If they are consecutive interior angles, they are supplementary, while if they are either alternate interior angles or corresponding angles, they are equal.