9 terms

Terms	Definitions
Perpendicular	Two lines that intersect creating a right angle
Right Angle	An angle that measures 90 degrees
Straight Angle	an angle that measures 180 degrees
Acute Angle	An angle that measures LESS THAN 90 degrees
Obtuse Angle	An angle that measures MORE THAN 90 degrees but LESS THAN 180 degrees
Ray	The set of points formed by extending a line segment in one direction without end.
Line	The set of all points formed by extending a line segment in both directions without end.
Angle	A set of all points fromt by two rays with a common endpoint.
Parallel lines	Two lines that DO NOT intersect

Flickr Creative Commons Images

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• "Perpendicular" image
• "Right Angle" image
• "Acute Angle" image
• "Obtuse Angle" image
• "Ray" image
• "Line" image
• "Angle" image
• "Parallel lines" image

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