Term | Definition |
Bisect | To cut down the middle, split in half, both smaller pieces are congruent. |
Congruence | The exact same |
Definition of Congruence | allows you to switch the sign between equal and congruence |
Midpoint | To cut down the middle, split in half, both smaller pieces are congruent. |
Linear Pair | two angles that are adjacent and supplementary.
(two angles touching on a line) |
Linear Pair Theorem | If angles are a linear pair, then they are supplementary |
Supplementary | Adds to 180 |
Angle Addition Postulate | the measure of the larger angle is the sum of the measures of the two smaller ones.
(little plus little equals big) |
Segment Addition Postulate | the measure of the larger segment is the sum of the measures of the two smaller ones.
(little plus little equals big) |
Perpendicular lines | Two lines that form 90 angles |
Parallel Lines | two lines that never intersect |
Right Angles | 90 degrees |
Vertical Angles | each of the pairs of opposite angles made by two intersecting lines
(always congruent) |
Substitution | Replace one value with an equivalent value |
Addition, Subtraction, Multiplication, Division Property of Equality | The operation is performed on both sides of the equal sign |
Reflexive | Exact same on both sides of the equal or congruence sign |
Symmetric | Flip the equation around |
Transitive | If 2 things are equal to A, then the two things are equal to each other |
Simplify | Combine like terms or anything you can type into the calculator |