When parallel lines are intersected by a transversal, 8 angles are formed. These 8 angles will have only 2 different values! One angle will always be given to you. To nd a missing angle, first identify the type of pair it makes with the original angle. - If it is an alternate interior, alternate exterior, corresponding, or vertical angle pair it will be equal to the original angle. . If it is a linear pair, same side interior or same side exterior angle pair, it will be supplementary to the original. Subtract the original angle from 180. These lines are parallel. The angles are labeled with single lower case letters. Angle a is 100 degrees. For each angle, determine the relationship it has to angle a and its measurement. Some answers will be used more than once. - v Angle b A. Corresponding angle with angle a. 100 degrees. - v Angle c B. Altenate exterior with angle a. 100 degrees. - v Angle d C. Linear pair with a. 80 degrees. - v Angle e D.Same side interior angle with angle a. 80 degrees. - v Angle g E. Vertical angle with angle a. 100 degrees. - v Angle h F. Same side exterior with angle a. 80 degrees G.Vertical angle with angle a. 80 degrees. H.Corresponding angle with angle a. 80 degrees