Geometry proofs vocab.

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Geometry & Trigonometry

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20 Terms

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Congruent
As also equal in measure.
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Perpendicular
intersects at a right angle, creates a right angle.
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Midpoint
a point that divides a line segment into two ≅ segments.
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Linear Pair
pair of angles that are adjacent and supplementary.
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Vertical Angles
if vertical angles, then they are congruent.
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Congruent  
also equal in measure
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Angle Bisector  
divides into two ≅ angle
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Segment bisector
line, segment or ray that divides a segment at the midpoint
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Midpoint
a point that divides a line segment into two ≅ segments
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Supplementary angles
two angles that add up to 180˚
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Complementary Angles
two angles that add up to 90˚
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Linear Pair
pair of angles that are adjacent and supplementary
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Right Angle
Angle measures exactly 90˚
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Perpendicular
intersects at a right angle, creates a right angle
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Vertical Angles
if vertical angles, then they are congruent
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Segment Addition Postulate
If B is between AC on a line segment, then AB + BC = AC
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Angle Addition Postulate
If T is in the interior of ∠ABC, then m∠ABT + m∠TBC = m∠ABC
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Right Angle Congruence
all right angles are congruent
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Congruent Complements Theorem
two angles complementary to the same angle or congruent angles are congruent
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Congruent Supplements Theorem
two angles supplementary to the same angle or congruent angles are congruent