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Adjacent angles share a common
B C D Adjacent angles share a common vertex and a common arm
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Supplementary angles are two angles
1150 900 900 650 180 - 90 = 90 180 - 115 = 65 Supplementary angles are two angles whose sum is 180o
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COMPLIMENTARY ANGLES 30o 420 60o 480 90 - 60 = 30 90 - 42 = 48
Complimentary angles are two angles whose sum is 900
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Opposite angles are non-adjacent angles
760 1040 B B 1040 760 A Opposite angles are non-adjacent angles that are formed by two intersecting lines
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A transversal is a straight line that intersects two or more lines.
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Straight angles measure 1800
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Corresponding angles These angles form an “F” pattern
1500 300 Do you notice any other angle relationships in this diagram? Corresponding angles are matching angles that are formed by a transversal and two parallel lines.
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Co-interior angles These angles form a “C” pattern 1200 600 1200 600
Do you notice any other angle relationships in this diagram? Co-interior angles are formed by a transversal and 2 parallel lines. The sum of co-interior angles is 1800.
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ALTERNATE ANGLES These angles form a “Z” pattern 1200 600
Do you notice any other angle relationships in this diagram? Alternate angles are matching angles that are formed by 2 parallel lines and a transversal
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