Skip to content
START WITH A QUESTION

What would you like to understand?

Find an answer. See the moment it becomes clear. Follow the idea further.

← Concept directory

Answers for “如何命名一条射线?”

2 keyword matches

Understanding your question. You can explore the search results below now.

Find a method

↗

To name a ray, write the endpoint first, followed by a second point in the direction the ray extends, and place a one-way arrow above the letters. The arrow symbol always points to the right in notation, regardless of the drawn direction.

Conditions: The object being named is a ray.; Two points are available: the endpoint and a direction point.

Find a method

↗

Segment notation uses a single overbar above the two endpoint letters, while line notation uses a double-headed arrow above the two point letters. A segment has two endpoints and is finite, whereas a line extends infinitely in both directions.

Conditions: The object is either a segment or a line.; Two points are used for naming.