Parallel Lines Properties of Angles Formed by Parallel Lines and a Transversal.

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Presentation transcript:

Parallel Lines Properties of Angles Formed by Parallel Lines and a Transversal

Parallel lines (Definition) A line that intersects both parallel lines is called a transversal. Which is the transversal in the diagram above?

Parallel lines

Corresponding Angles

Alternate Angles (they alternate…) Alternate Interior: inside the parallel lines, on either side of the transversal Alternate Exterior: outside the parallel lines, on either side of the transversal

Same Side Interior These angles are on the same side of the transversal and inside the parallel lines.

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