10.4 Perpendicular and Parallel Lines

Front

What are parallel lines?

Back

Lines that are always the same distance apart and never meet.

Front

What are perpendicular lines?

Back

Lines that intersect at a right angle (90 degrees).

Front

What does it mean for lines to intersect?

Back

Lines that cross each other at any angle.

Front

Can parallel lines ever meet?

Back

No, parallel lines never meet.

Front

What is an example of parallel lines in real life?

Back

Railroad tracks.

Front

What is an example of perpendicular lines in real life?

Back

The corners of a square or rectangle.

Front

How can you identify perpendicular lines?

Back

They form right angles when they intersect.

Front

What is the symbol for parallel lines?

Back

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

Front

What is the symbol for perpendicular lines?

Back

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

Front

If two lines are parallel, what can be said about their slopes?

Back

They have the same slope.