Parallel lines with transversal and angles

What do you notice about pairs of corresponding angles when the lines intersected by the transversal are parallel?

What do you notice about pairs of alternate interior angles when the lines intersected by the transversal are parallel?

What do you notice about pairs of alternate exterior angles when the lines intersected by the transversal are parallel?

What do you notice about pairs of consecutive interior angles when the lines intersected by the transversal are parallel?

What do you notice about any pair of angles that are not vertical, corresponding, alternate interior or alternate exterior (hint: use the view all angles option) when the lines intersected by the transversal are parallel?