![]() Let us join them by drawing a straight line. Let us mark two small dots (.) by a pencil as points A and B. It is the shortest path between the two points. A line segment is a straight line that connects two points. A section of a line is a line segment.Ī line segment has two endpoints. It starts from one point and ends at another point. A vertical line goes straight up or down.Ī diagonal line can be in any direction between horizontal line and vertical line. ![]() Both pass through the same two points A and B.Īn unlimited number of lines can be drawn passing through a given point A.Ī horizontal line goes straight left or right across. One and only one line can be drawn passing through two given points A and B. A line has no definite length.Ī line is named by any two points on it and written as line AB or line PQ. This is called line.Ī line goes without end in both directions. It indicates it can go further on both sides without end. This is a ray because a ray has one endpoint and goes without end in one direction Line The rays coming from torch or sun are examples of rays. An unlimited number of rays can be drawn in different directions from a given point In the figure above, the starts from A and the arrow denotes it can go to infinity. We say a ray has one endpoint and goes without end in one direction. ![]() It has staring point but has no end point. In Geometry also, a ray starts from a point and may go to infinity. The rays start from sun and go in all directions and reach to us. The light rays come out of it and move away. It is located at right bottom of the plan. In the figure below, there is another point A. Here it indicates this point O is located at the centre of the plane. In the figure above, O is a point as it has a definite mark. Point is denoted by a dot (.) and is named by an alphabet. Every shape is made through the combining the points.Ī small dot marked by a pencil is a point. Rays can go in any direction, like up, down, left, right, and diagonally.Point is the basic building block of Geometry. Keep in mind, though, geometry is a pure science. ![]() A word of cautionīecause English-language speakers, readers, and writers move their eyes from left to right, almost all rays you see symbolized in mathematics will have left endpoints and right arrows. Lasers are excellent examples of rays because unlike sports balls, they are not much affected by earth's gravity, so they shine in steady, straight one-way lines from their source. The path an arrow travels from a bow is a ray and has the added benefit of being, well, arrow-shaped. The light beam from a classroom LCD projector is a ray so is light from a movie projector at your local cinema. Tennis pro, Rafael Nadal, famously serves tennis balls at some 217 kph (135 mph), which defies gravity's tug so well it seems to travel in a straight line, just like a ray. It originates at our star, the Sun, and travels one way, striking earth some eight minutes after it left its "endpoint," the Sun. Ray in geometry examplesĪ ray of sunshine is a ray. He is the endpoint the traveling football is the one-way line. Gravity tugs the football down, but the quarterbacks' arm speed and strength can make short passes look like straight-line rays. This is the symbol for Ray , named after an NFL quarterback, who can throw a football that very nearly moves like a ray.
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