Geometry:Lines and angles

When 2 lines collide and then continue on their way. The angles are opp to each other

A line that intersects two or more lines at different points.

• The angles are congruent if the lines are parallel and cut by a transversal.(It is 'F' shaped')
• 

• ngles that are on opposite sides of the transversal and are between the two lines.
•  They are congruent if the lines are parallel. 
• Z shaped
•  

Angles that are on opposite sides of the transversal and are outside of the two lines. They are congruent if the lines are parallel.

• 1. supplementary
• 2. supplementary 
• 3. congruent(vertical angle)
• 4. congruent(corresponding)
• 5. supplementary (since \angle 6 = \angle 2)
• 6. supplementary (since \angle 7 = \angle 3)
• 7. congruent ( \angle  8 = \angle 4)