Identifying parallel and perpendicular lines

Front

What are parallel lines?

Back

Lines that run in the same direction and never meet.

Front

What are perpendicular lines?

Back

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

Front

What does it mean when lines intersect?

Back

It means that the lines cross each other at a point.

Front

How many sets of parallel sides does a rectangle have?

Back

2 sets of parallel sides.

Front

How many sets of parallel sides does a square have?

Back

2 sets of parallel sides.

Front

If two lines are perpendicular, what angle do they form?

Back

They form a right angle (90 degrees).

Front

Can parallel lines ever meet?

Back

No, parallel lines never meet.

Front

What is an example of intersecting lines in real life?

Back

The intersection of two roads.

Front

What is the relationship between parallel lines and distance?

Back

Parallel lines are always the same distance apart.

Front

If line AB is parallel to line CD, what can we say about their slopes?

Back

They have the same slope.