Term
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Definition
| if m is the midpoint of line AB, then line AB = 1/2(AB) & line MB = 1/2(AB) |
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Term
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Definition
| if line BD bisects angle ABC, then angle ABD = 1/2 (angle ABC) and angle DBC = 1/2 (angle ABC) |
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Term
| Definition of complementary angles |
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Definition
| pair of angles whose sum = 90 degrees |
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Term
| Definition of supplementary angles |
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Definition
| pair of angles whose sum = 180 degrees |
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Term
| Definition of vertical angles |
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Definition
| pair of angles formed by 2 intersection lines; those angles ARE NOT adjacent (don't share a line) |
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Term
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Definition
| vertical angles are congruent |
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Term
| Definition of Perpendicular Lines |
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Definition
| 2 lines that intersect to form a right angle |
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Term
| If 2 lines are perpendivular |
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Definition
| then they form congruent adjacent angles |
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Term
| If two lines form congruent adjacent angles |
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Definition
| then they are perpendicular |
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Term
| If the exterior sides of 2 acute adjacent angles are perpendicular |
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Definition
| then the angles are complementary |
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Term
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Definition
| if 2 lines are perpendicular then the angles formed measure 90 degrees |
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Term
| Complementary Angle Theorem |
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Definition
| Complements of angles that are congruent are congruent |
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Term
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Definition
| sum of all the parts (either segments of angles) equals a whole |
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Term
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Definition
| If B is the midpoint of AC, then AB = BC |
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Term
| Definition of an Angle Bisector |
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Definition
| If line BZ bisects angle ABC, then line AB = line BC |
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Term
| Definition of a right angle |
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Definition
| An angle that measures to 90 degrees |
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