A dot that is represented by a capital latter with no size.
Point
A flat surface that extends without end, has no location, and contains an infinite number of lines.
Plane
A part of a line consisting of two endpoints.
Line Segment
Points and lines on the same plane are...
Coplanar
A series of points that extends in two opposite directions without end.
Line
Coplanar lines that do not intersect.
Parallel Lines
Formed by two rays that have the same endpoint.
Angle
A part of a line with exactly one endpoint.
Ray
Images or shapes that are the same size and shape are...
Congruence
Planes that do no intersect
Parallel Planes
An angle with the measure of exactly 90 degrees.
Right Angle
Two segments that have the same measure or length.
Congruent Segment
Angles with the same measure.
Congruent Angles
Collinear
A triangle with one internal angle equal to 90 degrees.
Right Triangle
A segment that cuts another segment in half and is perpendicular to that line segment.
Perpendicular Bisector
A point on a segment that creates two congruent pieces of a segment.
Midpoint
An angle with the measure of less than 90 degrees.
Acute Angle
An angle with a measure greater than 90 but less than 180 degrees.
Obtuse Angle
Coplanar lines that intersect at 90 degrees.
Perpendicular Lines
Lines that are non-coplanar and not parallel nor do they intersect.
Skew Lines
A ray that divides an angle into two congruent angles.
Angle Bisector
Where both rays meet and form an angle.
Vertex
A segment that cuts another segment in half and intersects at the midpoint.
Segment Bisector
Rays that form the angles (BE and EG) are...
Sides