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Cards In This Set
| Front | Back |
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Adjacent Angles
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Share a vertex and one
side with no common interior points.
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Vertical Angles
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Two nonadjacent
angles formed by intersecting lines. These are always congruent.
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Linear pairs
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Two adjacent angles whose
non-shared sides form a line. These always have a sum of 180 degrees.
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Complementary angles
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Two angles whose sum is 90 degrees.
(they do not need to be adjacent angles, but they can be.)
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Supplementary angles
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Two angles whose sum is 180 degrees.
(they do not need to be adjacent angles, but they can be.)
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Perpendicular Lines
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Lines that intersect to
form right angles.
The symbol for perpendicular is:
example: 
says that line AB is perpendicular to line XY |
