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What is 1 + 3?
Always, Sometimes, Never
If two angles are supplementary to the same angle, then they are supplementary to each other.
Parallel lines are cut by a transversal and alternate interior angles are not congruent.
Passing through a point not on line l, there exists exactly one line perpendicular to line l.
Passing through point P not on line l, there exists exactly one line parallel to line l.
the converse of a theorem is true
A theorem can be proven
Two intersecting lines are coplanar
Supplementary angles form a linear pair
If line 1 is in plane X and line 2 is in plane Y and X is parallel to Y, then line 1 is parallel to line 2.
If points M and N are on line PQ and line PM is congruent to line NQ, then line PN is congruent to line MQ
An isosceles triangle __________ has exactly two congruent angles
An equilateral triangle is _________ an equiangular triangle
A point that is equidistant from the endpoints of a segment _________ lies on a perpendicular bisector of that segment
The measure of an exterior angle of a triangle is ________ equal to the sum of the measures of two interior angles
Alternate interior angles are ___________ congruent
Vertical angles are __________ congruent by definition
Parallel segments are ________ congruent