Perpendicular and Parallel

If two lines are perpendicular to each other, then they intersect at ______ °

In one surface, we can draw _______ line(s) perpendicular to a given line.

• 1

• 2

• infinite

If lines a ⊥ b ,  and c⊥b, then the relationship between a and c is perpendicular to each other.

• True

• False

There is a only one line at the distance of 1cm from the line AB.

• True

• False

The distance between two parallel lines is always the same.

• True

• False

Which of the following pictures has 3 pairs of parallel lines?

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• 
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• 

The distance from point B to line AC is line segment_______.

There are _____ pairs of parallel lines in the given picture

There are ___pairs of parallel lines in the picture.

The distance from point C to line segment BD is line segment____