Determine if each statement is always, sometimes, or never true. Parallel lines are
coplanar.

Perpendicular lines are
coplanar.

Distance around an unmarked circle can
be measured.

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.