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        | Angles on a line add to 180 degrees |  | Definition 
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        | Angles sum of triangle equal 180 degrees |  | Definition 
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        | Angles at a point add to 360 degrees |  | Definition 
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        | coint angles, // lines add to 180 degrees |  | Definition 
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        | corresp angles // lines = |  | Definition 
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        | Angles in a quad add to 360 degrees |  | Definition 
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        | Angles that add to 180 degrees are |  | Definition 
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        | Angles that add to 90 degrees are |  | Definition 
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        | Angles between 0 and 90 degrees |  | Definition 
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        | Angles between 90 and 180 degrees |  | Definition 
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        | Angles between 180 and 360 degrees |  | Definition 
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        | Angles that equal 90 degrees |  | Definition 
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        | Angles that equal 180 degrees |  | Definition 
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