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Two parallel lines intersected by a
transversa
l
form
corresponding pairs
of angles that are
congruent
.
Adjacent angles
share a common
vertex
and a common
ray
.
Two intersecting lines form pairs of adjacent angles that are
supplementary
. Also, two intersecting lines form pairs of congruent angles, called
vertical angles
.
Click each term below to see an example.
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Geometry

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Coordinate geometry
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Pairs of lines
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Classifying angles
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Angles and
intersecting lines
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Angles and intersecting lines