Answer:
The answer is B, they are perpendicular
Step-by-step explanation:
To be able to figure this out, you have to first find the relationship between a and b.
You can conclude lines a and b are parallel by the consecutive angles theorem. Line d would be the transversal line that intercepts line a and line b. Because the consecutive angles created are equal, lines a and b are parallel .
Then you can conclude the relationship between line c and d through the exact same principle. Lines c and d are parallel.
Notice how line a and line d create a right angle (as indicated by the square drawn on the angle) which means the lines are perpendicular to each other.
Since line c is parallel to line d, you can finally conclude that the intercept of line c and a would create a right angle and the lines would this be perpendicular.
