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Complete each statement with the word always, sometimes, or never.

Two lines skew to a third line are skew to each other

Complete each statement with the word always, sometimes, or never.

Two planes parallel to the same line are parallel to each other

Assume that $aâˆ\yen b$and $câˆ\yen d$, name all angels supplementary to $∠2$.

Draw each figure described.

Lines a and b are skew, lines b and c are skew, and $aâˆ\yen c$.

Draw each figure described.

Lines d and e are skew, lines e and f are skew, and $dâŠ\yen f$.

Draw each figure described.

42. Lines I$âˆ\yen$plane X, plane X$âˆ\yen$plane Y, and I is not parallel to Y.

In an octagon the sum of the measures of the interior angles is _?_.

Complete each statement with the word always, sometimes, or never.

If two parallel lines are cut by a third plane, then the lines of intersection are _______ coplanar.

Plane X is parallel to plane Y. If plane Z intersects X in line l and Y in line n, then l is parallel to n.

Complete. $m∠6+m∠7+m∠8=?$