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McGraw Hill Integrated II, 2012

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McGraw Hill Integrated II, 2012 View details

Practice Test

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Exercise 3 Page 467

The centroid is the point of concurrency of the medians of a triangle. Use the Segment Addition Postulate.

CD = 18

The centroid is the point of concurrency of the medians of a triangle. In the given diagram, K is the centroid.

Since K is the centroid, FG is the median from F to the midpoint of the side CD, G. Therefore, CG and GD have the same length. CG = GD = 9 By the Segment Addition Postulate, we can rewrite CD as the sum of the two smaller segments.

CD = CG+GD

CG= 9, GD= 9

CD= 9+ 9

Add terms

CD=18