Angles are really important for understanding parallel lines.

1. What is an Angle?: An angle is made when two lines meet. We measure angles in degrees.

2. Types of Angles with Parallel Lines:

   • Corresponding Angles: When a line crosses two parallel lines, the angles in the same position (like matching corners) are equal.
   • Alternate Angles: These angles are on the opposite sides of the crossing line (called a transversal) and are also equal.

For example, if two parallel lines are crossed by a transversal and one angle measures $30^\circ$, then any angle in a matching corner (the corresponding angle) will also be $30^\circ$.

This helps us see how lines and shapes are connected in geometry!