day 1 1-dimensional figures
Post on 31-Aug-2014
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Rina Iati
Baresville Elementary
SouthWestern School District
Line
A line goes on and on in both directions. A line is drawn with an arrow on each end
This is called a point!
When it’s at the end of a line it is called an endpoint!
Line Segment
A line segment is a part of a line. It is drawn with two endpoints
Ray
A ray goes on and on in one direction. It is drawn with an arrow on one end and an endpoint on the other.
Parallel lines are always the same distance apart. They will never touch.
“Enemy Lines”
Parallel Lines
Can you find the parallel lines?
Intersecting Lines
Intersecting lines are two lines that cross each other
“Friends”
Perpendicular Lines
Perpendicular lines are two lines that intersect to form right angles.
90
“Married”
Can you find the perpendicular lines?
Perpendicular lines are also intersecting lines because they cross each other.
Perpendicular lines are a special kind of intersecting lines because they always form “perfect” right angles.
90
Name each figure
PointLine
RayLine Segment
Perpendicular
IntersectingParallel
Well Done!
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