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| a specified point on a line, whihc separates or divides the line into three disticnt sets of points, the separation point itself, and the two sets of points on either side of that point |
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| formally, in our geometry a set of points is a half line, if and only if, it is one of the two sets of points on either side of a specific point on the line called the separation point |
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| from the Latin work radius meaning spoke of a wheel this is the separation point itself together with a half line. Formally in our geometry the set of points designated AB is a ray if and only if it is the union of the separation point A of a line called the endpoint and the set of points containted in teh half line which inclueds the poin tB |
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| a geometric fugure whih cis described as an infinite set of points arranged in a straight pattern more specifically it can be described as the union of three sets of distinct points a single dsignated point called the separation point, and two otehr sets of points called half lines on on either side of the separation point |
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| two rays going in opposite directions on teh same line which have a common endopoint. formally in our geometry, two rays BA and "BC are considered ppposite rays, if and only if B is between A and C |
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| aB aC and AD in our geometry with coordinates b c d respectivly ray AC is said to liey between ray AB and ray aD if and only if b is less than c is lesss than d or d is less than c is less than bhfor three disticnt coplnar rays |
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