# Shared Flashcard Set

Lines and Angles
vocabulary terms
11
Mathematics
02/15/2010

## Additional Mathematics Flashcards

Term
 It has no endpoint. There are arrows on each end.
Definition
 Line
Term
 It has 2 endpoints. Its length can be measured.
Definition
 Line Segment
Term
 It is part of a line. One end has an endpoint. The other end goes on forever.
Definition
 Ray
Term
 Two lines that meet or cross at a right angle. (Remember: a right angle looks like the side of a square!)
Definition
 Perpendicular lines
Term
 Lines that never cross or intersect each other. (Think railroad tracks!)
Definition
 Parallel lines
Term
 Lines that meet or cross (Not at 90 degrees)
Definition
 Intersecting lines
Term
 Two rays, when sharing the same endpoint, form one of these.
Definition
 Angle
Term
 Two rays that share the same endpoint form an angle. What is this endpoint called?
Definition
 Vertex
Term
 An angle that is less than a Right Angle. (less than 90 degrees) It is so Cute!
Definition
 Acute Angle
Term
 An angle that equals 90 degrees.It looks like the side of a square--look for the special little symbol like a box in the angle.
Definition
 Right Angle
Term
 An angle that is greater than 90 degrees. (It is greater than a Right Angle!)
Definition
 Obtuse Angle
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