(1-6) classifying angles
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8/8/2019 (1-6) Classifying Angles
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Classifying
AN G LE S
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SYMBOLS
$congruent symbol means 2items have the samemeasure CON
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Acute Angles
A n acute angle is an angle measuring between 0 and 90 degrees.T he following angles are all acute angles.
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Ri ght AnglesA ri ght angle is an angle measuring 90degrees.T he following angles are both right angles.
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Ob tuse Angles
A n ob tuse angle is an angle measuring between 90 and 180 degrees.T he following angles are all obtuse.
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S tra i ght AngleA st r a ight angle is 180 degrees.
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V ert i cal AnglesV er t ical Angles form an X
12
43
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Adjacent, S upplementary, and
Complementary Angles
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A djacent angles are side by sideand share a common ray.
1 2
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T hese are examples of adjacent angles.
55
35
5 013 0
80 45
8520
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T hese angles are NO
T adjacent.
4555
5 0100
35
35
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S upplementary angles add up to180.
6 0120
4 0
14 0
Adjacent and Supplementa ry Angles Supplementa ry Anglesb ut n o t Adjacent
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C omplementary angles add up to90.
6 0
3 0 4 05 0
Adjacent and Co
mplementa ry Angles Co
mplementa ry Anglesb ut n o t Adjacent
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G AME TIME!T he object of the game is to be
the first to r a ise yo ur hand andcorrectly name what type of
angle you see .T he c o rr ect answe r w ill b e o n the
f o llo w ing sl ide!!G oo d luck!
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D irections: Identify each pair of angles as vertical,
supplementary,
complementary,or none of the above.
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# 1
6 0120
vertical, supplementary, complementary,or none of the above.
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# 1
6 0120
Supplementa ry Angles
vertical, supplementary, complementary,or none of the above.
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#2
6 03 0
vertical, supplementary, complementary,or none of the above.
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#2
6 03 0
C o mplementa ry Angles
vertical, supplementary, complementary,or none of the above.
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#3
75
75
vertical, supplementary, complementary,or none of the above.
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#3
75
75
V er t ical Angles
vertical, supplementary, complementary,or none of the above.
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#4
6 04 0
vertical, supplementary, complementary,or none of the above.
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#4
6 04 0
N o ne o f the a bov e
vertical, supplementary, complementary,or none of the above.
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#5
6 0
6 0
vertical, supplementary, complementary,or none of the above.
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#5
6 0
6 0
V er t ical Angles
vertical, supplementary, complementary,or none of the above.
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#6
45135
vertical, supplementary, complementary,or none of the above.
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#6
45135
Supplementa ry Angles
vertical, supplementary, complementary,or none of the above.
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#7
6 5
25
vertical, supplementary, complementary,or none of the above.
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#7
6 5
25
C o mplementa ry Angles
vertical, supplementary, complementary,or none of the above.
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# 8
5 090
vertical, supplementary, complementary,or none of the above.
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# 8
5 090
N o ne o f the a bov e
vertical, supplementary, complementary,or none of the above.
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D irections: D etermine the missing
angle.
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# 1
45?
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# 1
45135
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#2
6 5
?
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#2
6 5
25
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#3
35
?
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#3
35
35
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#4
5 0
?
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#4
5 0
130
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Acute Angle
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Obtuse Angle
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Ri ght Angle
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G R EAT J OB !
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