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# What is a ray in geometry?

In geometry, a ray is a straight line extending infinitely from a fixed point. A ray is expressed using an arrow as its symbol (--->). A ray cannot be measured since it does not have an end on one side.

Continue ReadingA ray is part of a line, which goes on infinitely in both directions and is indicated with the symbol <--->. Like a ray, a line cannot be measured. A line segment, however, can be measured because it is part of a line with both a beginning and an ending point. When two rays share the same fixed point, an angle is formed, and that common point is known as the vertex.

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## How do you find the equation of a secant line?

A: A secant line of a curve is a straight line connecting two points on the curve. The equation for a line is given by the formula y = mx + b, where m equals ... Full Answer >Filed Under: -
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## What is the directrix of a parabola?

A: The directrix of a parabola refers to a straight line that is drawn perpendicular to the axis of symmetry of a parabola. This line does not touch the parab... Full Answer >Filed Under: -
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## What is a chord in math?

A: A chord is a straight line that connects two points on the curve of a circle. Unlike a secant, which is a line that extends infinitely in both directions, ... Full Answer >Filed Under: -
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## How many edges does a cylinder have?

A: A cylinder technically has two curved edges, but in mathematics, an edge is defined as a straight line. Therefore, a cylinder actually has no edges, no ver... Full Answer >Filed Under: