Angle Relationships and Parallel Lines

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Angle Relationships and Parallel Lines
Adjacent Angles - share a vertex and a side but
no points in their interiors.
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2 are adjacent angles.
Congruent Angles - have the same measure.
Vertical Angles - are formed by two intersecting
lines and are opposite each other. Vertical
angles have the same measure / congruent.
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3 are vertical angles.
Supplementary Angles - are adjacent angles whose
angles add up to 180o
2
3 are supplementary angles.
Complementary Angles - are adjacent angles whose
angles add up to 90o
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Angle Relationships and Parallel Lines
Find the measure of 3 if m 4 110.
110 110
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Angle Relationships and Parallel Lines
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5
6
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3
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8
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Transversal line a line that intersects two
other lines in different points.
Corresponding angles lie on the same side of
the transversal line and are in corresponding
position.
Alternate Interior Angles are in the interior
of a pair of lines and on opposite sides of the
transversal line.
Alternate Exterior Angles are on the exterior
of a pair of lines and on opposite sides of the
transversal line.