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19 Cards in this Set
- Front
- Back
Linear Pair Postulate
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If two angles form a linear pair, then they are supplementary. i.e the sum of their measures is 180 degrees
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Transitive Property
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If a=b and b=c then a=c
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Congruent Supplements Theorem
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if two angles are supplementary to the same angle or to congruent angles then they are congruent
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Segment Addition Postulate
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If B is between A and C, then Ab+BC=AC
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If two lines are perpendicular...
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...then they intersect to form 4 right angles
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Symmetric Property
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If a=b then b=a
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Alternate Interior Angles Theorem
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If two parallel lines are cut by a trasversal then the pairs of alternate interior angles are congruent
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Perpendicular Transversal Theorem
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If a transversal is perpendicular to one or two parallel lines, then it is perpendicular to the second
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Consecutive Interior Angles Converse
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If two lines are cut by a transversal so that consecutive interior angles are supplementary then the lines are parallel
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Alternate Exterior Angles Converse
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Theorem= If two lines are cut by a transversal so that alternate exterior angles are congruent then the lines are parallel
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Alternate Exterior Angles Theorem
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If two parallel lines are cut by a transversal, then the pairs of alternate exterior angles are congruent.
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Congruent Complements Theorem
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If two angels are complementary to the same angle or to congruent angles, then they are congruent
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Corresponding Angles Converse
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If two lines are cut by a transversal so that corresponding angles are congruent then the lines are parallel
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Corresponding Angles Postulate
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If two parallel lines are cut by a transversal then the pairs of corresponding angles are congruent
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COnsecutive Interior Angles Theorem
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If two lines are cut by a transversal then the pairs of consecutive interior angles are supplementary
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Property of Perpendicular Lines
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If two coplanar lines are perpendicular to the same line then they are prallel to eachother.
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If two disinct lines intersect...
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...then their interesection is exactly one point
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Reflexiver Property
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a=a
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Transitivity of Parallel Lines
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If two lines are parallel to the same line then they are parallel to eachother
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