Always, Sometimes, Never angles
Two right angles are congruent.
A
Two angles of a linear pair are both obtuse.
N
A right angle is a vertical angle.
S
The measure of a straight angle is greater than the measure of an obtuse angle.
always
Two angles in a linear pair are adjacent to each other.
always
Two angles of a linear pair are supplementary.
always
Two lines intersect to form vertical angles.
always
Two vertical angles are congruent.
always
Two vertical angles have equal measures.
always
Vertical angles share a common vertex.
always
An acute angle has a degree measure of negative 45.
never
Two acute angles are supplementary.
never
Vertical angles share three common points.
never
A pair of supplementary angles are adjacent to each other.
sometimes
A point in the exterior of one of two vertical angles is in the interior of the other.
sometimes
An angle adjacent to a right angle is also a right angle.
sometimes
An obtuse angle has a degree measure of 170.
sometimes
The sum of the measures of two acute angles is greater than the measure of one obtuse angle.
sometimes
Two adjacent angels are both acute angles.
sometimes
Two angles whose degree measures sum to 180 form a linear pair.
sometimes