Equal or summing to 180?
A transversal crosses two parallel lines, making eight angles in total, four at each crossing. A student picks any two of these eight angles that are not both at the same crossing. Must the pair be equal, must it sum to 180, or does it depend on which two the student picked?
Correct.This lesson is now marked done.
Back to the lesson · Next lesson: The converse: equal alternate angles make lines parallel →
Not quite.Try again, or ask for a hint.
Check which side of the transversal each angle sits on, and whether the two angles share a crossing or sit at different crossings, before deciding whether the relationship is equality or a sum to 180.
Getting it wrong does not hold you back.Move on to the next lesson: The converse: equal alternate angles make lines parallel →