Transcript Always, Sometimes, Never - Father Ryan High School

Always, Sometimes, Never
• 1. In a plane, two lines perpendicular to
the same line are _______ parallel.
• 2. If two lines are cut by a transversal,
corresponding angles are _____
congruent.
• 3. A transversal perpendicular to one of
two parallel lines is ______ perpendicular
to the other line.
• 4. Two lines parallel to a third line are
_____ parallel to each other.
• 5. An obtuse triangle is _______ isosceles.
True or False
• 1. Two lines that are not parallel must
intersect.
• 2. Two noncoplanar lines cannot be
parallel.
• 3. A line and plane must either be parallel
or intersect.
• 4. If 2 parallel planes are cut by a third
plane, then the lines of intersection cannot
intersect one another.
Always, Sometimes, Never
• 1. An isosceles triangle _______ has
exactly two congruent sides.
• 2. A conclusion reached by deductive
reasoning is _____ true if the hypothesis is
true.
• 3. A 17-sided convex polygon is ______
equiangular.
• 4. A conclusion based on several past
observations is _______ true.
Complete
• 1. The sum of the measures of the exterior
angles of any convex polygon, one at each
vertex, is __________.
• 2. The sum of the measures of the acute
angles of a right triangle is ________.
• 3. The sum of the measures of the angles
of a convex polygon with n sides is
__________.