Angle Pairs, Parallel Lines and Transversal

Which angle pairs are always congruent?

• Linear Pair, Same Side Interior, Same Side Exterior

• Vertical, Alternate Interior, Alternate Exterior, Corresponding

In this picture, two parallel lines are cut by a third line, called a transversal. What is the maximum number of Linear Pairs of angles you can find?

• 2 Linear Pairs

• 4 Linear Pairs

• 6 Linear Pairs

• 8 Linear Pairs

In this picture, two parallel lines are cut by a third line, called a transversal. How many vertical angle pairs can you find?

• 2 pairs of vertical angles

• 3 pairs of vertical angles

• 4 pairs of vertical angles

• 8 pairs of vertical angles

• Sweet!

• Cool.

• Right on.

• They are congruent

• They form vertical angles

• They form a linear pair

• They are non-adjacent angles