8th Grade · Geometry
Transversal
8.G.A.5
Definition
A line that intersects two or more other lines. When it crosses parallel lines, it creates pairs of angles with special relationships.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- A transversal cutting two parallel lines forms 8 angles.
- Angle 1 and angle 5 are corresponding; angle 3 and angle 6 are alternate interior.
Key rule
With parallel lines, a transversal creates equal or supplementary angle pairs.
Memory hook
A line that crosses two parallel lines.