The equation 30 + 60 = 90 shows this type of angle relationship.
What is complementary?
angles that add up to 90 degrees
What are complementary angles?
complimentary angles
What are angles that have a sum of 90 degrees?
These angles are equal because they are across from each other.
What are vertical angles?
angles are congruent because they are opposite from each other are also called this
What are vertical angles?
Supplementary angles
These angles are in the same location of different intersections. They are also congruent to each other.
What are corresponding angles?
a linear pair
Supplementary angles that are also adjacent
These angles are on the inside of the parallel lines, but on opposite sides of the transversal. They are equal.
What are alternate interior angles?