Parallel Lines and Transversals
Presentation
•
Mathematics
•
8th - 12th Grade
•
Medium
Jacqueline Sims
Used 959+ times
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13 Slides • 0 Questions
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Notes-Parallel Lines and Transversals
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Parallel Lines
Remember, Parallel lines are lines that lie in the same plane that do not intersect!
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Transversals
Transversals are lines that intersect two or more lines
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When a transversal intersects a pair of PARALLEL LINES , 8 angles are formed
These angles have special relationships that you have to remember
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Interior v. Exterior
Interior means BETWEEN the parallel lines
Exterior means OUTSIDE the paralell lines
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Consecutive v. Alternate
Consecutive means on the SAME SIDE of the TRANSVERSAL
Alternate means on DIFFERENT SIDES of the TRANSVERSAL
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Corresponding Angles
Angles that are in the same position on each parallel line
Corresponding Angles are CONGRUENT
Which of these angles are corresponding?
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ALTERNATE INTERIOR ANGLES
Angles inside the parallel lines but on different sides of the transversal
Alternate Interior Angles are CONGRUENT
Which of these angles is the alternate interior?
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ALTERNATE EXTERIOR ANGLES
Angles OUTSIDE the parallel lines but on different sides of the transversal
Alternate Exterior Angles are CONGRUENT
Which of these angles is the alternate exterior?
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CONSECUTIVE INTERIOR ANGLES
(same side interior)
Angles INSIDE the parallel lines AND on SAME sides of the transversal
Consecutive Interior Angles are SUPPLEMENTARY (=180)
Which of these angles is the consecutive interior?
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CONSECUTIVE EXTERIOR ANGLES
(same side exterior)
Angles OUTSIDE the parallel lines AND on SAME sides of the transversal
Consecutive Exterior Angles are SUPPLEMENTARY (=180)
Which of these angles is the Consecutive Exterior?
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Notes-Parallel Lines and Transversals
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