Two angles with measures that have a sum of 90 degrees
complementary
intersection of two rays at a common endpoint
angle
congruent angles that are across from each other on intersecting lines
vertical angles
a line, ray or segment that divides an angle or segment into two equal parts
bisector
a measurable part of a line consisting of two endpoints
line segment
points that lie on the same line
collinear
two lines that intersect at 90 degrees
perpendicular
a line that extends indefinitely in one direction
ray
points that lie on the same plane
coplanar
location with no size or shape
point
two angles that share a common vertex and side
adjacent angles
a flat surface made up of points that extends indefinitely in all directions
plane
Made up of points with no thickness or width; Extends indefinitely in both directions.
line
Adjacent angles that are supplementary.
linear pair
Two angles with measures that have a sum of 180°.
supplementary
