| Lines 1 | Lines 2 | Angles |
|---|---|---|
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What is a point?
An exact location in space.
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What is a plane?
A flat surface that extends forever in all directions.
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What is a vertex?
The point where two sides come together.
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What is a line?
A straight path of points that goes on forever in only one direction.
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What are congruent line segments?
Line segments with the same lengh.
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What is an acute angle?
An angle that is less than 90 degrees.
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What is a line segment?
Part of a line with two endpoints.
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What are perpendicular lines?
Intersecting lines that form right angles.
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What is a right angle?
An angle that is 90 degrees.
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What is a midpoint?
The point halfway between the endpoints of a line segment.
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What are parallel lines?
Lines that are in the same plane but do not intersect.
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What is an obtuse angle?
Angle measuring more than 90 degrees.
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What is a ray?
Part of a line with one endpoint, extending forever in only one direction.
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What are skew lines?
Lines that lie in different planes. They do not intersect and are not parallel.
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What is a straight angle.
An angle measuring 180 degrees.
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