2.2 and 2.3 Flashcards
(9 cards)
Segment Addition Postulate
If B is between A and C, then AB+BC=AC
Angle Addition Postulate
If C is in the interior of angle AOD, then the measure of AOC plus the measure of COD, equals the measure of AOD.
Congruent Segments
Two segments are congruent if they have the same measure.
Congruent Angles
Two angles are congruent if they have the same measure.
Midpoint
The point that divides the segment into two congruent segments.
Segment Bisector
A segment, ray, line, or plane that intersects a segment at it’s midpoint.
Angle Bisector
A ray that divides the angle into two congruent angles.
Perpendicular Lines
Two lines are perpendicular if they intersect to form a right angle.
A line is perpendicular to a plane…
…if it is perpendicular to each line in the plane that intersects it.