9514 1404 393
Answer:
A
Step-by-step explanation:
When angles are between the parallel lines, they are called <em>interior</em>. If they are both on the same side of the transversal, they are "same-side interior."
If angles are on opposite sides of the transversal, they are <em>exterior</em>.
If angles are in the same direction from the intersection point, they are <em>corresponding</em>.
Angles in opposite directions from the point of intersection are <em>vertical</em> angles.
same-side interior: {3, 5} and {4, 6}. (supplementary)
same-side exterior: {1, 7} and {2, 8}. (supplementary)
alternate interior: {3, 6} and {4, 5}. (congruent)
alternate exterior: {1, 8} and {2, 7}. (congruent)
corresponding: {1, 5}, {2, 6}, {3, 7}, {4, 8}. (congruent)
vertical: {1, 4}, {2, 3}, {5, 8}, {6, 7}. (congruent)
Angles 6 and 4 are same-side interior angles; their sum is 180°.
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