In geometry, in a two-dimensional plane, two lines are said to be parallel if they do not intersect, in spite of how much they are extended. For example, opposite sides of a square are parallel.
Angle Properties[]
In the image to the right,
- All of the red acute angles are congruent
- All of the blue obtuse angles are congruent
- 3 and 6 are alternate interior angles
- 4 and 5 are alternate exterior angles.
- 3 and 7 are corresponding angles.
- 4 and 8 are corresponding angles
- 1 and 5 are corresponding angles
- 2 and 6 are corresponding angles