Basics of Geometry Vocab

What is a Ray?

• consists of the endpoint and all points on that lie on the same side

• Intersects the segment at its midpoint

• A location in space that is represented by a dot and has no dimension

• An angle that equals 90

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What are Collinear Points?

• Points that lie in the same plane

• The region that contains all the points between the sides of an angle

• A flat surface made up of points that has two dimensions and extends without end, and is represented by a shape that looks like a floor or a wall

• Points that lie on the same line

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What is a plane?

• A flat surface made up of points that has two dimensions and extends without end, and is represented by a shape that looks like a floor or a wall

• Two adjacent angles whose noncommon sides are opposite rays

• The region that contains all the points outside of an angle

• A point, ray, line, line segment, or plane that intersects the segment at its midpoint

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A location in space that is represented by a dot and has no dimensions

• Point
• Line
• Plane
• Angle

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A line has one dimension. It is represented by a line with two arrowheads, but it extends without end.

• Point
• Line
• Plane
• Angle

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Consists of 2 endpoints and all the points in between.

• Ray
• Line
• Line Segment
• Angle

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Coplanar lines that do not intersect.

• Parallel Lines
• Perpendicular Lines
• Congruent Segments
• Parallel Planes

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A flat surface made up of points that has two dimensions and extends without end and is represented by a shape that looks like a floor or wall.

• Point
• Plane
• Angle
• Line

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Which of these symbols represent this picture?

• <

• →

• ↔

• ⊥

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Which one is a way to name this line?

• ̅A̅ ̅B̅

• ̅B̅ ̅A̅

• Line A

• Line l

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