honors geometry: section 3.3 part 2 parallel lines
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Honors Geometry: Section 3.3 part 2 Parallel Lines. Two lines are parallel iff they are coplanar and do not intersect. To indicate that is parallel to we write _______ Arrowheads are use to indicate parallel lines in a figure. - PowerPoint PPT PresentationTRANSCRIPT
Honors Geometry: Section 3.3 part 2
Parallel Lines
Two lines are parallel iff they are coplanar and do not intersect.
To indicate that is parallel to we write _______
Arrowheads are use toindicate parallel lines in a figure.
AB CDCDAB //
Noncoplanar lines which do not intersect are called skew.
Postulate 3.3.2Corresponding Angles Postulate
(CAP)
If two parallel lines are cut by a transversal, then corresponding
angles are congruent.
Theorem 3.3.3Alternate Interior Angles Theorem
(AIAT)
If two parallel lines are cut by a transversal, then alternate interior
angles are congruent.
1) 1) Given
)
Theorem 3.3.4Alternate Exterior Angles Theorem
(AEAT)
If two parallel lines are cut by a transversal, then alternate exterior
angles are congruent.
Theorem 3.3.5Same-Side Interior Angles Theorem
(SSIAT)
If two parallel lines are cut by a transversal, then same-side interior
angles are supplementary.
1. 1. Given
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Supp. of Def.
Examples: Find the value of the variable in each problem.
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4
416
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Examples: Find the value of the variable in each problem.
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180610
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Examples: Find the value of the variable in each problem.
75.20
1668
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