3.1-3.3 Flashcards
If there is a line and a point not on the line then there is exactly one line through the point paralell to the given line
Parallel postulate
If there is a line and a point not on the line then there is exactly one line through the point perpendicular to the given line
Perpendicular postulate
The sum of all triangles in the will always equal 180 degrees
Triangle sum theorem
If two lines are paralell to the same line then they are paralell to each other
Transitive property of parralell lines
horizontal slope
zero slope
vertical slope
undefined slope
Two nonvertical lines are paralell if and only if they have the same slope
Slopes of parralell lines postulate
Two nonvertical lines are perpendicular if and only if the produict of their slopes is negative 1
Slopes of perpendicular lines postulate