When looking for alternate angles, it can be helpful to look for a Z-shape. The Z-shape can be backwards, sideways or upside down. Corresponding angles occur at the same position within each ...

The symbol that represents corresponding angles being congruent ... This theorem dictates that vertically orientated, alternate interior angles of two rays intersecting will always be equal.

When a pair of parallel lines meet an intersecting transversal, pairs of angles with particular properties are made. Corresponding angles are equal. The lines make an F shape. Notice that the F ...