Geometry Sometimes Always or Never

A plane and a line not in that plane which are parallel to the same line, are parallel to each other.

Always

Fill in the blank with always, sometimes or never: Two intersecting lines ____?____ intersect in exactly one point.

Always

Squares are rhombi.

Always

Two angles that are supplementary and congruent are right angles. This statement is always, sometimes or never true

Always

a conditional statement is true, then the contrapositive is ??? true.

Always

Fill in the blank with always, sometimes or never: Two intersecting planes ____?____ intersect in exactly one point.

Never

If two parallel lines are intersected by a transversal, then the co-interior angles are complementary.

Never

In a plane, two lines perpendicular to the same line are perpendicular to each other.

Never

Skew lines are parallel.

Never

Two intersecting planes ____?____ intersect in exactly one point

Never

Two acute angles can be supplementary. This statement is always, sometimes or never true

Never

Two angles that form a linear pair and are congruent are vertical angles. This statement is always, sometimes or never true.

Never

A line which intersests one of two parallel lines intersects the other also.

Sometimes

Fill in the blank with always, sometimes or never: Three points____?_____ lie in exactly one plane

Sometimes

Fill in the blank with always, sometimes or never: Two planes ____?____ intersect

Sometimes

Fill in the blank with always, sometimes or never: Two planes ____?____ intersect.

Sometimes

If a quadrilateral is not a trapezoid, then it is a rhombus.

Sometimes

If a shape is a rectangle, then it is a rhombus.

Sometimes

If two parallel lines are intersected by a transversal, then the corresponding angles are supplementary.

Sometimes

Two angles that are complementary are also adjacent angles. This statement is always, sometimes or never true.

Sometimes

Two lines parallel to the same plane are parallel to each other.

Sometimes

Two lines skew to the same line are skew to each other.

Sometimes

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

Sometimes

Two planes perpendicular to a third plane are parallel to each other.

Sometimes