In Review Exercises 18 to 23, use construction methods with the accompanying figure.
Given: 


Find:  The centroid 
To find: The centroid of the triangle ABC.
Given:
The triangle ABC is shown below.
Definition used:
Centroid:
The point of concurrence of three median is the centroid of the triangle.
Median:
A median of a triangle joins a vertex to the midpoint of the opposite sides of the triangle.
Calculation:
Consider the triangle ABC.
Join the midpoints of each side of the triangle to its opposite vertex.
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