Basic vocabulary Flashcards
A location in space. It has no size. It is represented as a small dot and is named by a capital letter.
Point
The set of all points.
Space
A series of points that extends in two directions with out end.
Line
A flat surface that extends in all directions with out end.
Plane
Points and lines in the same plane are said to be _____________________.
Coplanar
An accepted statement of fact.
Postulate
A ______________ is the part of a line consisting of two endpoints and all the points between them.
Segment
A _________________ is the part of a line consisting of one endpoint and all the points of the line on one side of the endpoint.
Ray
Two lines in the same plane that never meet are said to be _______________
Parallel lines = ||
Two lines in different plans that never meet are said to be ________________.
Skew lines
What are two lines that meet called?
intersecting lines
What are perpendicular lines?
Intersecting lines that meat at a 90 degree angle.
What is an acute angle?
An angle that measures less than 90 degrees.
What is a right angle?
An angle that measures 90 degrees.
What is a straight angle?
An angle that measures 180 degrees.
