What is the sum of co interior angles enclosed by a pair of parallel lines?

When the two lines being crossed are Parallel Lines the Consecutive Interior Angles add up to 180°.Click to see full answer. Keeping this in view, what is the sum of two co interior angles?ANSWER: The sum of 2 co interior angles are 180°.Furthermore, do parallel lines add up to 180? The parallel case If the transversal cuts across parallel lines (the usual case) then the interior angles are supplementary (add to 180°). So in the figure above, as you move points A or B, the two interior angles shown always add to 180°. In respect to this, what do angles on parallel lines add up to? Two angles are said to be supplementary when the sum of the two angles is 180°. When a transversal intersects with two parallel lines eight angles are produced. The eight angles will together form four pairs of corresponding angles. Angles 1 and 5 constitutes one of the pairs.What is the F rule in angles?Adjacent angles add up to 180 degrees. (d and c, c and a, d and b, f and e, e and g, h and g, h and f are also adjacent). d and f are interior angles. These add up to 180 degrees (e and c are also interior). Any two angles that add up to 180 degrees are known as supplementary angles.