Parallel Lines Vocab

Given the following two parallel lines that have been cut by a transversal.\n\n\angle1 and which angle make up Alternate Interior angles?

What are parallel lines?

• Lines that intersect to form a 90 degree angle

• Lines in a same plane that do not intersect

• A line that intersects 2 or more lines

• Lines that intersect at one point

-angles between 2 lines (interior) and on opposite sides of a transversal (alternate)

-CONGRUENT when lines are parallel

• Alternate Interior Angles

• Same Side Interior Angles

• Corresponding Angles

• Vertical Angles

What are corresponding angles?

• Angles whose sum measures 180 degrees

• Angles whose sum measures 90 degrees

• Two angles in the same position when parallel lines are cut by a transversal

• The angles opposite of each other when two lines cross.

What are alternate interior angles?

• A pair of angles on the outer side of two lines cut by a transversal, but on opposite sides of the transversal

• The angles opposite of each other when two lines cross

• A pair of angles on the inner side of two lines cut by a transversal, but on opposite sides of the transversal

• Two angles in the same position when parallel lines are cut by a transversal

What are alternate exterior angles?

• A pair of angles on the outer side of two lines cut by a transversal, but on opposite sides of the transversal

• The angles opposite of each other when two lines cross

• A pair of angles on the inner side of two lines cut by a transversal, but on opposite sides of the transversal

• Two angles in the same position when parallel lines are cut by a transversal

-Angles in the same place on different lines

• Corresponding Angles

• Alternate Interior Angles

• Bisecting Angles

• Supplementary Angles

-Angles Between the lines (interior) and on the same side of the transversal.

-SUPPLEMENTARY when lines are parallel

• Supplementary Angles

• Same Side Interior Angles

• Linear Pair

• Vertical Angles