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Observe the figure; the geometry represents whether point, line or plane.
The geometric term modeled by the arrow head is a point.
The geometric term modeled by the arrow head represents a point.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")