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Learn how to identify parallel lines and their properties, such as being equidistant and having the same direction. Explore how to use pairs of angles to test for parallel lines and see examples and interactive activities.
- Lines
Ray. When it has just one end it is called a "Ray". This is...
- Alternate Exterior Angles
To help you remember: the angle pairs are on Alternate sides...
- Corresponding Angles
When two lines are crossed by another line ... When the two...
- Alternate Interior Angles
To help you remember: the angle pairs are on Alternate sides...
- Vertical Angles
Example: Find angles a°, b° and c° below: Because b° is...
- Transversal
When parallel lines get crossed by a transversal many angles...
- Lines
Learn what parallel lines are, how to identify them, and how to use them in geometry and equations. Find out the properties, examples, and practice problems of parallel lines and transversals.
In geometry, parallel lines are coplanar infinite straight lines that do not intersect at any point. Parallel planes are planes in the same three-dimensional space that never meet. Parallel curves are curves that do not touch each other or intersect and keep a fixed minimum distance.
Two lines are parallel if they do not meet, no matter how far they are extended. The symbol for parallel is \ (||\). In Figure \ (\PageIndex {1}\), \ (\stackrel {\leftrightarrow} {A B}\) \ (||\) \ (\stackrel {\leftrightarrow} {C D}\). The arrow marks are used to indicate the lines are parallel.
Learn what parallel lines are, how to identify them, and their properties and angles. See examples of parallel lines in real life and practice questions on parallel lines.
Parallel lines are lines in a plane which do not intersect. Like adjacent lanes on a straight highway, two parallel lines face in the same direction, continuing on and on and never meeting each other.
Learn what parallel lines are, how to identify them, and how to write their equations. Find out the angle relationships, slope, and real life examples of parallel lines.
