Respuesta :
a centroid in a triangle, is the point where all the medians meet.
now a peculiar thing about the centroid is that, it cuts all medians in a 2:1 ratio.
so, if that's true, then the median AE, is being cut in two segments AD and DE and AD : DE are on a 2 : 1 ratio, are they? let's check.
[tex]\bf \stackrel{median~AE}{AD+DE}\qquad AD:DE\implies \cfrac{AD}{DE}\implies \cfrac{12}{4}\implies \cfrac{3}{1}\implies 3:1 \ne 2:1[/tex]
now a peculiar thing about the centroid is that, it cuts all medians in a 2:1 ratio.
so, if that's true, then the median AE, is being cut in two segments AD and DE and AD : DE are on a 2 : 1 ratio, are they? let's check.
[tex]\bf \stackrel{median~AE}{AD+DE}\qquad AD:DE\implies \cfrac{AD}{DE}\implies \cfrac{12}{4}\implies \cfrac{3}{1}\implies 3:1 \ne 2:1[/tex]
A ratio shows us the number of times a number contains another number. The correct option is D.
What is a Ratio?
A ratio shows us the number of times a number contains another number.
A centroid is the point where all the three medians of the triangle intersect. It is also the point at which divides all the median in 2:1 ratio. Therefore, if the ratio of AD:DE is 2:1, then D can be the centroid of the circle.
Now the ratio of AD:DE is,
AD/DE = 12/4 = 3/1
Since the ratio of AD:DE is 3:1. D can not be the centroid of the triangle.
Hence, the correct option is D.
Learn more about Ratios:
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