Mathematics for IGCSE & O level - Angles (Section 2 - No. 20)
Which of these describe co-interior angles?
Angles between parallel lines.
Angles on the same side of a transversal.
Angles which sum to 180 degrees.
All of the above.
Vysvetlenie
co-interior angles are on the same side of a transversal and they add up to 180°.