Parallel lines play a major role in the study of geometry. In this module, you will learn about the angles that are formed when parallel lines are intersected by another line called a transversal. You will also spend time solving practical problems involving the angles that are formed when parallel lines are intersected by a transversal.
Take a look at the street map provided. Which streets appear to be parallel? Hover your cursor over the image to view the correct response.
Key Vocabulary
To view the definitions for these key vocabulary terms, visit the course glossary.
acute angle
adjacent angles
alternate exterior angles
alternate interior angles
angle
Angle Addition Postulate
complementary angles
congruent angles
corresponding angles
line
linear pair
obtuse angle
parallel lines
plane
ray
right angle
same-side exterior angles
same-side interior angles
segment
straight angle
Substitution Property
supplementary angles
Transitive Property of Congruence
transversal
vertex of an angle
vertical angles