congruent angles
two angles are congruent if they have the same measure
congruent segments
two segments are congruent if they have the same length
segment bisector
a segment,ray,line, or plane that intersects a line at it’s midpoint
angle bisector
a ray that divides an angle into two congruent angles
perpendicular lines
two lines are perpendicular if they intersect to form a right angle
perpendicular line and plane…
a line is perpendicular to a plane if it is perpendicular to each line in the plane that intersects it