Chapter 3's Top 5 Concepts
Definitions
- Skew Lines - lines that do not intersect and are not on the same plane
- Transversal - a line that intersects two or more lines
- Parallel Planes - planes that never intersect
Formulas
- Parallel Lines - equal slopes
- Perpendicular Lines - negative reciprocal slopes
- example : y = 2x + 14 and y = 2x + 3. Since the slopes are equal (( 2x )), the lines are parallel.
- example : y = 2x + 14 and y = -1/2x + 3. Since the slopes are negative reciprocals (( 2x and -1/2x)), the lines are perpendicular.