**Vertical Angles:**

They are defined as a pair of nonadjacent angles formed by only two intersecting lines.

**Corresponding Angles:**

They are considered to be in the same location at each point of intersection

**Alternate interior angles:**

Located between the two intersected lines, these angles are on opposite sides of the transversal.

**Alternate Exterior Angles:**

Located outside of the two intersected lines and on opposite sides of the transversal.

**Consecutive Interior Angles:**

These angles are located on the same side of the transversal and inside of the two lines.