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Geometry 1-5 Notes
September 01, 2016
Adjacent Angles: two angles that lie
in the same plane and have a
common vertex, a common side, but
NO common interior points.
YES:
YES:
1
2
1
NO:
NO:
2
1
1
2
2
NO:
NO:
1
2
1
2
Linear Pair (of angles):
A pair of adjacent angles with
noncommon sides that are opposite
rays.
YES:
YES:
2
1
1
2
NO:
1
2
NO:
1
2
Geometry 1-5 Notes
September 01, 2016
Vertical Angles: Two
nonadjacent angles formed by
two intersecting lines.
YES:
YES:
1
2
1
2
NO:
NO:
1
2
1
2
ALTERNATE DEFINITION:
Angles formed by intersecting
lines that share a vertex, but not
a side. (THIS IS A BETTER
DEFINITION.)
Complementary Angles:
Two angles whose sum of their measures
o
is 90
Supplementary Angles:
Two angles whose sum of their measures
o
is 180
Special facts: (not part of the
definitions)
*Vertical Angles are Congruent
*Angles in a linear pair are
supplementary.
Geometry 1-5 Notes
September 01, 2016
Is line KJ
perpendicular to
line GF?
NO or C.B.D.
(Cannot Be
Determined)
Examples of things you CAN assume:
Examples of things you CANNOT assume:
Geometry 1-5 Notes
September 01, 2016
Geometry 1-5 Notes
September 01, 2016
A
B
Quiz
1-5 Assignment:
8-17, 19-41
Angle Proofs #2
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