is this a alternate interior angle, corresponding angle, vertical angle, supplementary angle or linear pair?

Abcd is a parallelogram. the diagram is not drawn to scale. if m

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

The ratios 3: 9, 4: 12, 5: 15, and 6: 18 are a pattern of equivalent ratios in the ratio table. which is another ratio in this pattern?