**Complementary Angles**– two angles whose measures add to 90 degrees**Supplementary Angles**– two angles whose measures add to 180 degrees**Vertical Angles**– opposite angles formed when two lines intersect; vertical angles are congruent**Adjacent Angles**– angles that share a ray and a vertex**Intersect**– cross or meet**Non-adjacent Angles**– angles that do not share a ray and a vertex

#### Learn

#### Flashcards

#### Matching

#### Crossword Puzzle

Crossword Puzzle Word Bank

complementary_angles

supplementary_angles

vertical_angles

adjacent_angles

intersect

non-adjacent_angles

#### Test Yourself!

Lesson 18 Vocabulary

i have finished it

Great! Will you be ready for your quiz tomorrow? Maybe you can go over them again tonight ๐

I loved it! the way to study are kinda like fun video games!

Yay! I’m glad you had fun while learning! ๐