Signs of Lines
An exact location shown as a dot
Point
Lines that never ever cross each other at one common point.
Parallel Lines
An angle that measures exactly 180 degrees.
Straight Angle
A part of a line that has a start and a end.
Line Segment
A part of a line that crosses each other at one common point.
Intersecting Lines
An angle that measures between 91 - 179 degrees.
Obtuse Angles
A line that extends in both directions with no start or end
Line
Lines that intersect to form right angles.
Perpendicular Lines
An angle that measures exactly 90 degrees.
Right Angle
A part of a line that has a start but no end
Ray
An angle that measures less than 90 degrees.
Acute