Vocabulary
Angle c and angle d are vertical angles. Angle c measures 72 degrees. What is the measure of angle d?
72 degrees
Angle x and angle y are vertical angles. Angle y measures 149 degrees. What is the measure of angle x?
149 degrees
What do you call a line that cuts across two parallel lines?
Transversal
Angles a and c are vertical angles. Angle a measures 42 degrees. What is the supplement of Angle c?
138 degrees
Angles which are opposite and congruent are called?
Vertical Angle
Angles a and b are vertical angles. Angle a measures 171 degrees. What is the supplement of angle b?
9 degrees