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Geometry Vocabulary
Geometry Vocabulary
13
Mathematics
4th Grade
02/28/2006

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Cards

Term
Line
Definition
a straight path extending both ways (no endpoints)
Term
Segment
Definition
a line with 2 endpoints
Term
Ray
Definition
a line that extends forever in only 1 direction
Term
Angle
Definition
2 rays that meet at a common end point
Term
Intersecting lines
Definition
2 lines that cross at one point
Term
Parallel lines
Definition
lines that stay exactly the same distance apart (will never intersect)
Term
Perpendicular lines
Definition
2 lines that intersect to form right angles
Term
Acute angle
Definition
an angle smaller than 90 degrees
Term
Right angle
Definition
an angle that measures 90 degrees
Term
Obtuse angle
Definition
an angle that measures larger than 90 degrees
Term
Center
Definition
the point inside a circle that is the same distance away from the side of the circle
Term
Diameter
Definition
a line segment that passes throught the center of a circle
Term
Circumference
Definition
the distance around a circle
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