Angle pairs, practice, online answers
1. Complementary angles: Two angles whose measures add up to 90 degrees.
2. Supplementary angles: Two angles whose measures add up to 180 degrees.
3. Vertical angles: Two angles that share the same vertex and are formed by two intersecting lines.
4. Linear pair: Two angles that are adjacent and form a straight line.
5. Corresponding angles: Two angles that are in the same position on two parallel lines cut by a transversal.
6. Alternate interior angles: Two angles that are on opposite sides of the transversal and inside the parallel lines.
7. Alternate exterior angles: Two angles that are on opposite sides of the transversal and outside the parallel lines.
8. Same-side interior angles: Two angles that are on the same side of the transversal and inside the parallel lines.
9. Same-side exterior angles: Two angles that are on the same side of the transversal and outside the parallel lines.