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Co Interior Angles:
Co-interior angles lie between two lines and on the same side of a transversal. In each diagram the two marked angles are called co-interior angles. If the two lines are parallel, then co-interior angles add to give In figure, the following pairs of angles are called pairs of consecutive interior angles: Example: Identify co - interior angles from the given figure: Solution: <2 and <5 are co - interior <2 + <5 = 180. <3 and <8 are co - interior <3 + <8 = 180. From the above discussion, we can conclude by considering two parallel lines AB and CD and a transversal L intersects them: The converse of each of the above statements is also true. | ![]() |