Lines that intersect and form right angles
Perpendicular
A part of a line with a single endpoint
Ray
Lines that cross at one point
Intersecting
Part of a line with two endpoints
Line Segment
An Endless straight path with no endpoints
Line
An angle that measures more than 90 degrees and less than 180 degrees
Obtuse
Lines that are the same distance apart, they never intersect
Parallel
An exact location in space
point
An angle that measures less than 90 degrees
acute
An angle that measure 90 degrees
right