Parallel Lines

• Alternate angles:

  Alternate angles are the same. They are found in a Z-shape.
• Allied/co-interior angles:

  Allied/co-interior angles add up to 180°. They are found in a C-shape or a U-shape.
• Vertically opposite angles:

  Vertically opposite angles are the same.
• Corresponding angles:

  Corresponding angles are the same. They are found in an F-shape.
• What are parallel lines?

  Straight lines that are always the same distance apart and never intersect.
• What is a transversal?

  A line that intersects two or more other lines.