Exterior angle on parallel lines and a Transversal

Author:
HIlary
Parallel lines are lines in a plane which never meet or intersect. The lines have the same slope. A transversal is a line that intersects at least two other lines. In this activity you will be able to observe and analyze the eight angles created when a transversal cuts two parallel lines. Move the transversal by selecting and dragging point C and/or point H. Analyze the eight angles created when a transversal cuts two parallel lines.