Basic Geometry Terms

An angle with measure equal to 90°

• Acute angle
• Complementary angle
• Straight angle
• Right angle

Points that lie in the same plane

• Coplanar points
• Collinear points
• Noncollinear points
• Noncoplana points

Two dimensional and extends without end, even though the drawing appears to have edges

• Line
• Line segment
• Plane
• Ray

Two angles whose measures have the sum 90°

• Complementary angles
• Right angle
• Supplementary angles
• Adjacent angles

Angles that have the same measure

• Complementary angles
• Supplementary angles
• Adjacent angles
• Congruent angles

Part of a line that consists of a point called an endpoint and all points on the line that extend in one direction

• Plane
• Line segment
• Ray
• Angle

Points that lie on the same line

• Coplanar points
• Noncollinear points
• Collinear points
• Noncoplanar points

Two angles whose measures have the sum 180°

• Complentary angles
• Supplementary angles
• Obtuse angle
• Straight angle

one dimensional and extends without end in two directions

• Plane
• Line
• Line segment
• Ray

The absolute value of the difference of the coordinates of the points

• Midpoint
• Intersection
• Distance
• Bisector