Point
an exact location in space; a dot; every thing is made up of points.
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Line
goes on and on infinately; has arrows on both ends; made up of points; named by two points on the line itself.
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Line Segment
A part of a line shown with a point on each end; can be measured; named by the letters of the end points.
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Ray
Has a point on one end and and arrow on the other; can not be measured as it goes on infinitely.
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Intersecting Lines
Two or more lines that touch or cross at one point.
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Perpendicular Lines
A special type of intersecting line that forms right angles where it intersects.
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Parallel Lines
Two or more lines that NEVER intersect or touch; railroad tracks...
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Vertex
A point where to rays or linesegments meet; corners of shapes
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Acute Angle
Less than 90 degrees; baby packman
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Right Angle
Exactly 90 degrees; Mrs. Pacman
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Obtuse Angle
Greater than 90 but less than 180; Mr. Pacman
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Straight Angle
180 degrees exactly; Mr. Pacman unhinged
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What is a polygon?
A closed shape with 3 or Straight side; no curves
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Name a shape that has 3 sides
triangle
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4 sided shape
a quadralateral
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5 sided shape
Pentagon
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6 sided shape
hexagon
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7 sided shape
heptagon
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8 sided shape
octogon
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9 sided shape
nonagon
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10 sided shape
decagon
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parallelogram
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rhombus