Perpendicular lines are vertical lines that form a right angle between them, that is, an angle of $90°$ degrees.

Perpendicular lines appear in many geometric shapes, such as a rectangle, a square, a right triangle, and others.

Perpendicular lines are vertical lines that form a right angle between them, that is, an angle of $90°$ degrees.

Perpendicular lines appear in many geometric shapes, such as a rectangle, a square, a right triangle, and others.

Which lines are parallel to each other?

Perpendicular lines that form a $90°$ degree angle between them.

Perpendicular lines in a right triangle.

Perpendicular lines in a rectangle: the $2$ adjacent sides in the rectangle are perpendicular to each other.

Which lines are perpendicular to each other?

Let's remember that perpendicular lines are lines that form a right angle of 90 degrees between them.

The only drawing where it can be seen that the lines form a right angle of 90 degrees between them is drawing A.

Which lines are perpendicular to each other?

Perpendicular lines are lines that form a right angle of 90 degrees between them.

The only drawing where the lines form a right angle of 90 degrees between them is drawing A.

Which figure shows perpendicular lines?

Perpendicular lines are lines that form a right angle between them.

In the drawings A+C+D, you can see that the angles formed are not right angles.

It is possible to point out a right angle in drawing B.

Which of the figures shows parallel lines?

Parallel lines are lines that, if extended, will never meet.

In the drawings A+B+D if we extend the lines we will see that at a certain point they come together.

In drawing C, the lines will never meet, therefore they are parallel lines.

Which of the figures show perpendicular lines?

Perpendicular lines are lines that form a right angle of 90 degrees between them.

It can be observed that in figures 1 and 3, the angles formed by the lines between them are right angles of 90 degrees.

1 and 3

Test your knowledge

Question 1

Which lines are perpendicular to each other?

Question 2

Which lines are perpendicular to each other?

Question 3

Which figure(s) show intersecting lines?

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- Angles In Parallel Lines
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