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Alternate Angles In Transversal

Please have a look at the attachment. Are the angles 3, 4, 8 & 9 interior angles? In other words, what are the exterior & interior angles when a transversal cuts 3 (or more) lines? Also the corresponding angle of angle 2 is angle 5. Why isn't angle 9 the corresponding angle of angle 2? Similarly the corresponding angle of angle 4 is angle 6. Why isn't angle 2 the corresponding angle of angle 4?

Coming to the alternate angles - the alternate angle of angle 1 is angle 6. Why isn't angle 4 or angle 5 the alternate angle of angle 1? Similarly the alternate angle of angle 5 is angle 8. Why isn't angle 3 or angle 11 the alternate angle of angle 5?

Thanks