Vocabulary
Any line that intersects two parallel lines
Transversal
If two parallel lines are cut by a transversal, these angles are on the inside of the two parallel lines and on the same side of the transversal.
Same Side Interior Angles (Consecutive Interior)
If a pair of adjacent angles form a straight line, they are called: ______ angles.
Supplementary
Two angles whose measures add up to 180 degrees
Supplementary angles
Two angles whose measures add up to 90 degrees
Complementary Angles.
When two angles have the same size in degrees, we call them:
Congruent Angles
When 2 parallel lines are both intersected by a transversal, these angles occupy the same position on the top and bottom parallel lines.
Corresponding Angles.
A pair of angles formed that are located next to each other
Adjacent Angles
What is the relationship between same side interior (Consecutive) angles?
They are supplementary
Congruent angles formed by two intersecting lines. They are located across the intersection point.
Vertical Angles.
If two parallel lines are intersected by a transversal these angles are located on the outside of the two parallel lines in opposite sides of the transversal.
Alternate Exterior Angles.
What is the realtionship between angles 1 and 4?
What are Vertical Angles.
If the measure of angle 2 is 30 degrees , what is the measure of angle 7?
What is 30.
When 2 parallel lines are both intersected by a transversal these angles are inside of the two parallel lines and on opposite sides of the transversal.
Alternate Interior Angles.
Lines that do not intersect.
Parallel lines.