Angles Flashcards
(15 cards)
What are lines in the same place that do not intersect called?
Parallel Lines
What is a line that intersects other lines called?
Intersecting
What happens when a transversal intersects 2 parallel lines?
8 angles are formed
What are angles that are on the same side of the transversal called?
Corresponding angles
What is true about corresponding angles?
These angles are equal
What are the angles called that are on different sides of the transversal?
Alternate interior angles
What is true about alternate interior angles?
These angles are equal
What are the angles called that are on different sides of the transversal and outside the parallel lines?
Alternative exterior angles
What is true about alternative exterior angles?
These angles are equal
What are angles that share a common vertex called?
Vertical angles
What is true about vertical angles?
These angles are equal
What are angles that have a sum of 180° called?
Supplementary angles
How many sets of supplementary angles are formed when two parallel lines are covered by a transversal?
16 sets
Every acute angle is supplementary to every _______ angle.
obtuse
Every obtuse angle is supplementary to every _______ angle.
acute
