Geo Exam 1: Review 3 - Parallel, Perpendicular, & Proofs

Front

What is the definition of parallel lines?

Back

Parallel lines are lines in a plane that never meet; they are always the same distance apart and have the same slope.

Front

What is the definition of perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees). The slopes of two perpendicular lines are negative reciprocals of each other.

Front

How do you determine if two lines are parallel using their equations?

Back

Front

How do you determine if two lines are perpendicular using their slopes?

Back

Front

Back

Front

What is the equation of a vertical line?

Back

Front

What is the equation of a horizontal line?

Back

Front

What is the slope-intercept form of a line?

Back

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

Front

What is the relationship between the slopes of two parallel lines?

Back

The slopes of two parallel lines are equal.