Vocabulary
Same-Side Interior Angles
Angles that lie on the same side of the transversal.
If corresponding angles are congruent then lines are parallel.
Converse of corresponding angle theorem.
Lines that are not coplanar, do not intersect and are not parallel.
Skew Lines
These angles for a straight line.
What are a linear pair?
Alternate Exterior Angles
Angles that lie on opposite sides of the transversal.
If alternate interior angles are congruent then lines are parallel.
converse of alternate interior angle theorem.
Lines that intersect and form 90 degree angle.
Perpendicular lines.
Angle that measures up to 90 degrees.
A right angle.
Alternate Interior Angles
Nonadjacent angles that lie on opposite sides of the transversal.
If same side interior angles add to 180, then lines are parallel.
Converse of same side interior angle theorem.
The slopes of perpendicular lines.
What are negative reciprocals?
Two angles formed by intersecting lines that don't share a common side.
Vertical Angles
Perpendicular Bisector
A line perpendicular to a segment at the segment's midpoint.
If alternate exterior angles are congruent then lines are parallel.
Converse of alternate interior angle theorem.
Parallel lines
What are coplanar lines that never intersect?
Complementary angles.
Two angles that add up to 90 degrees.
Slope-Intercept Form
What is y = mx + b, where m is the slope and b is the y-intercept?
The length of the perpendicular segment between point and a line.
The shortest distance between a point and a line.
A line that intersects 2 coplanar lines at 2 points.
A transversal.
Two angles that add to 180 degrees.
Supplementary angles.
Same side interior angles.
Angles on interior same side of transversal.