Parallel lines and transversals
Plane geometry · Mathematics
Study notes
Q: Parallel lines cut by a transversal; one angle is 70°. Find its corresponding, alternate interior, and co-interior angles. Corresponding: 70° (equal!). Alternate interior: 70° (equal!). Co-interior: 180° - 70° = 110° (supplementary!). Vertical opposite of 70°: 70° (always equal!).