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# What is a ray in math?

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In math, a ray is part of a line that has an endpoint at its starting point and extends in a certain direction into infinity. Drawing a ray involves placing a line with one endpoint and an arrow point on the other end. To name a ray, the convention is to use the letter at the starting point followed by a letter near the arrow point.

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One can use capital letters to name a ray, and over the two letters is drawn a ray symbol. An alternate convention used to name a ray is to use one lower case letter.

Two rays that diverge from a common starting point are called an angle. Another name for this starting point is the vertex of the angle.

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## Related Questions

• A:

In mathematics, the term "multiplier" pertains to any number by which another number, known as the "multiplicand," is multiplied. The result of a multiplication operation is referred to as the "product."

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When a number is squared in math, it means it's been multiplied by itself. For example, two squared is two times two, or four; and 10 squared is 10 times 10, or 100. When a number is squared, it is written as that number (the base) to the second power.

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A cubed number in math is one that has been multiplied by itself three times. They are called cubed numbers because the height, width and depth of a cube are all the same. The cubes of whole numbers, or counting numbers, including zero, are called perfect cubes.