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# help in geometry

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In this diagram, how many points are coplanar with points A, B and R?

one

two

four

six

edit

i forgot the image

Aug 5, 2019
edited by travisio  Aug 5, 2019

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one last time any one help in the next 8 minutes and i will not ask another question today and sorry i forgot the image

Aug 5, 2019
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What do you understand the question to mean?

There is a dictionary in google.

Aug 6, 2019
edited by Melody  Aug 6, 2019
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"Coplanar" means, that points are situated in one plane.

If you have a flat surface, like a soccer-field, and you mark random points on this soccer-field, the points will all be coplanar.

Anything that is above or below the soccer-field is not colplanar with the points that are on the soccer-field.

The picture you present shows the points A, B and R to be colinear. That means, they are all connected by a straight line. As they are connected by a straight line, they don't span up a plane. Thus they can't be coplanar, because you need any combination of the points A, B oder R and another point outside the line AB. Depending on which point other than A, B or R you choose, you will have a plane. All three points, A, B and R will be coplanar with that plane.

Aug 12, 2019
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thanks nevertheless

travisio  Aug 12, 2019