Geometry EOC Review B.E.S.T. Standards Part 4

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Geometry EOC Review BEST Standards Part 4/7

Note: @21:27, which is GR3.3, question #2, you can also quickly use the formula for the centroid ( (x1+x2+x3)/3, (y1+y2+y3)/2 ). In the video, I was trying to stress how to do it with Algebra because my students struggle with equations of lines and needed to practice this.
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To find the coordinates of the centroid, would you be able to add all x coordinates divided by 3 to get the x coordnate of the centriod, then add all y coordinates divided by 3 to get the y coordnate of the centroid?

michaelmoscoso
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My test is tomorrow and I didn’t know no any of this. Should I be worried?

tylerfoster
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Can't you make a triangle and a hexagon out of a plane and a cube?

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