4B M4 Lesson 3 Exit Ticket Perpendicular Lines

Front

What are perpendicular lines?

Back

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

Front

What is an example of perpendicular lines in real life?

Back

The black lines on a Railroad Crossing sign are an example of perpendicular lines.

Front

True or False: Perpendicular lines are always parallel.

Back

False

Front

Which figure shows a set of perpendicular lines?

Back

Figure 2 shows a set of perpendicular lines.

Front

What do we call lines that never meet?

Back

Parallel lines.

Front

What do we call lines that cross each other at an angle?

Back

Intersecting lines.

Front

What is the angle formed by perpendicular lines?

Back

90 degrees.

Front

If two lines are perpendicular, what can we say about their slopes?

Back

The product of their slopes is -1.

Front

Can perpendicular lines be vertical and horizontal?

Back

Yes, a vertical line and a horizontal line are always perpendicular.

Front

What is the relationship between perpendicular lines and right angles?

Back

Perpendicular lines always form right angles.