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Mathematics 8 Online
OpenStudy (miss.rose):

Pre-Algebra Rays and Angels!

OpenStudy (miss.rose):

Directrix (directrix):

A ray is named with two letters: its beginning point first followed by a second point on the ray. An arrow is on top of the two points with the > on the ray pointing in the direction in which the second point lies.

Directrix (directrix):

As an example, ray RC (option B) is not correct. R is not the beginning point of the ray.

OpenStudy (miss.rose):

AR?

Directrix (directrix):

Does the ray begin at point A? Look at the diagram.

Directrix (directrix):

Where does the ray begin? At what point?

OpenStudy (miss.rose):

@calculusxy

OpenStudy (miss.rose):

would it be CA or in this case AC? or CR?

OpenStudy (calculusxy):

CR because you need to look at the starting and ending points (the one closest to the arrow) in the ray. |dw:1459287187716:dw|

Directrix (directrix):

Ray begins at point C

OpenStudy (calculusxy):

|dw:1459287218197:dw|

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