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lines VA SOL 4.10 a,
identifying deff. and examples of types of lines as noted in the VA SOL blueprint
23
Mathematics
4th Grade
11/14/2010

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