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.
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.