Save
...
Undefined Terms
Relationship between POINTS, LINES, AND PLANES
LINES
Save
Share
Learn
Content
Leaderboard
Learn
Cards (5)
Intersecting Lines
- TWO lines with a
COMMON
point
Ex: line m and l are intersecting in point O
Parallel Lines
- Coplanar Lines that do NOT intersect
Ex: KD↔ and IN↔ are
parallel
lines (KD↔ ∥ IN↔)
Perpendicular Lines
-
TWO
intersecting lines that form
RIGHT
angles
Ex: line y is perpendicular with line x and vice versa. (line y ⊥ line x)
Concurrent Lines
-
Three or more coplanar lines that
intersect in
exactly ONE point
Ex: lines a, b, c, and d are Concurrent Lines
Skew Lines
- Lines NOT on the same planes
Ex: