Perpendicular, Parallel, and Intersecting Lines

Front

What are parallel lines?

Back

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

Tags

CCSS.HSG.CO.A.1

Front

What are perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

What are intersecting lines?

Back

Intersecting lines are lines that cross each other at any angle.

Tags

CCSS.HSG.CO.A.1

Front

How can you identify parallel lines in a figure?

Back

Parallel lines can be identified by looking for lines that are equidistant from each other and do not intersect.

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

What is the symbol used to denote parallel lines?

Back

The symbol '||' is used to denote parallel lines.

Tags

CCSS.HSG.CO.A.1

Front

What is the symbol used to denote perpendicular lines?

Back

The symbol '⊥' is used to denote perpendicular lines.

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

Can two lines be both parallel and perpendicular?

Back

No, two lines cannot be both parallel and perpendicular; they are mutually exclusive.

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

What is the relationship between the slopes of parallel lines?

Back

The slopes of parallel lines are equal.

Tags

CCSS.8.EE.B.5

Front

What is the relationship between the slopes of perpendicular lines?

Back

The slopes of perpendicular lines are negative reciprocals of each other.

Tags

CCSS.HSG.CO.A.1

Front

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

Back

If the product of the slopes of two lines is -1, then the lines are perpendicular.