Current location - Training Enrollment Network - Mathematics courses - How should rays be expressed? There are two methods in the math book: 1. "Ray"+Endpoint letter+Direction letter. 2. Express directly with lowercase letters.
How should rays be expressed? There are two methods in the math book: 1. "Ray"+Endpoint letter+Direction letter. 2. Express directly with lowercase letters.
Both methods are possible.

1. Ray endpoint O, write a letter A in the exit direction, then you can say' Ray OA'.

2. write a lowercase letter a directly next to the ray, then it can mean' ray a'.

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