Mathematics is a branch that science. Numerous scientists consider mathematics a pure science, one that is equal components precision and imagination. Collinear points is a fancy, however a precise, way of describing clues in a line.

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Collinear clues Definition

Mathematicians usage words very exactly. In Euclidean geometry, Collinear points are points the all lie in the very same line, even if it is they are close together, far apart, or form a ray, heat segment, or line. A little Latin helps: col + linear = collinear.


col means "together." our word college originates from the exact same prefix. Linear means line.

The combination, collinear, method points together on a single line.

Collinear points in genuine Life

Anytime you have a collection of individual items in a solitary straight line, you have actually models of upright points. Expect you have actually eggs in a carton; each egg in one row is a collinear point:


Students sit at a lengthy cafeteria table space collinear. Football football player on the line of scrimmage are collinear. Rings on a shower head curtain, tree in one row in a garden, number on a ruler, moviegoers in a ticket line, and also commuters seated on a train space collinear.

For real-life instances to be great models of collinear points, you need to have the ability to draw a directly line through them. Think of the individual kernels on one heat of an ear of corn.

Collinear foods are discovered all over the globe. In Japan, civilization enjoy Dango; sweet little dumplings arranged three to five on a skewer.


Sosatie is a southern African dish of tiny cubes that lamb or mutton interspersed with dried apricots, red onions, and mixed peppers, every on skewers.

Frigărui, a Romanian kebab, is cubes of meat v bacon, onions, tomatoes, bell peppers, and mushrooms.

In all cases, the tiny bits the food room lined increase on a bamboo or hardwood skewer, so they room all points on a solitary line. They space all collinear.

Non-Collinear Points

What is not a version of upright points? The angle marks around the bent edge of a protractor, for one thing. Neither space spirals, helixes, all five corners that a pentagon, or clues on a globe.

Here space some examples of non-collinear points:


Non-collinear points space a collection of point out that perform not lie on the very same line. Picture a sushi role in prior of you. Sticking through our example above, a second skewer the food sitting alongside ours would not have any type of points collinear with our skewer, since they space all on a various skewer or line.

Points must lie ~ above the very same line to have collinearity. If picture a best triangle v two points label on two different sides points L and also R. If suggest L ~ above the hypotenuse and point R top top the base, then allude L and point R room non-collinear.

Collinear points in Geometry

Very often, collinear points show up in geometric numbers such together quadrilaterals, triangles, parallelograms, and more. Take this kite with two diagonals intersecting in ~ Point S:


Two set of collinear points appear around the diagonals in this geometric figure:


But friend can additionally find all these various other collinear points due to the fact that only two points recognize a line:


Collinear clues Examples

We will certainly leave you with a side watch of a tiny street brazier for making skewered meat kebabs. Notice the legs cross and also have a bottom brace, i beg your pardon creates two triangles to store the brazier stable. Deserve to you uncover at least 10 set of upright points?


We space sure you saw sets like points A and also B, C and D, and points A - F - E - I - D, however did you also pick up on ones favor CH,  HE,  EG, and GB?

The clues C - H - E and E - I - D, which kind two political parties of a triangle (the bottom triangle) are also collinear.

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Look in ~ points H - E - G and also E - G - B. Each of these 3 points space collinear together well. Keep looking; an ext sets of collinear points are waiting to it is in found!

Coplanar Points

We now understand that upright points, occasionally spelled "colinear" (just on L), space points that lie on a straight line. But what around coplanar points? In a 3 dimensional world, coplanar points are a set of points the lie on the exact same plane. Learn more about coplanar points.