The three dimensions
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Letisha has marked the point A. Put your finger on the point A. Can you move your finger and still be on the point A? A
Letisha has drawn a line segment AB. Put your finger on the line segment AB. Can you move your finger and still be on the line segment AB? A B
A line is a set of points with no thickness or curves. You can move along a line in either direction. It is one-dimensional .
A line goes on and on for ever. If only part of a line is shown, it is called a line segment.
Letisha has drawn a plane shape ABCD. Put your finger in the plane shape. Can you move your finger and still be in the plane?
A
B
C
D
A plane is a flat surface. You can move left and right, and up and down. It is two-dimensional .
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01/12/2021 15:12
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