In the figure shown, linear is parallel to line , and both lines are interested by line . If , , and , where is a constant, what is the value of ?
Enter a number or fraction, e.g. 5, 0.5, 1/2
Explanation
Context: , transversal . , , . Find .
Answer:
Why: Co-interior angles: . , so , giving .
Traps: Using corresponding (equal) instead of co-interior (supplementary).