By Julia Nordstrom

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Lines and Angles

• By Julia Nordstrom
• Santa Paula CA
• Barbara Webster Elementary School

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Points
An exact position or location
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Lines and Rays
LINE A straight path extending in both
directions with no endpoints
LINE SEGMENT A part of a line that includes two
points, called endpoints, and all the points
between them
RAY A part of a line, with one endpoint, that
continues without end in one direction
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More about Lines
INTERSECTING LINES Lines that cross
PARALLEL LINES Lines that never cross and are
always the same distance apart
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Perpendicular Lines
Two lines that intersect to form four right
angles
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What is it?
Parallel Lines
Ray
Intersecting Lines
Line Segment
Line
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Angles
The figure formed when two rays share the same
endpoint
Acute Angle An angle less than a right angle
Obtuse Angle An angle greater than a right
angle
Right Angle An angle that forms a square corner
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Right Angle or Not?
Not!
Not!
Right Angle
Not!
Right Angle
Not!
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Right, Acute or Obtuse?
Obtuse Greater
Acute Less
Right Angle
Obtuse Greater
Right Angle
Acute Less
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Biblilography
Harcourt Math Multimedia Glossary