2021 Fall AMC 10A Problems/Problem 17

Problem

An architect is building a structure that will place vertical pillars at the vertices of regular hexagon $ABCDEF$ , which is lying horizontally on the ground. The six pillars will hold up a flat solar panel that will not be parallel to the ground. The heights of pillars at $A$ , $B$ , and $C$ are $12$ , $9$ , and $10$ meters, respectively. What is the height, in meters, of the pillar at $E$ ?

$\textbf{(A) 9} \qquad\textbf{(B) } \qquad\textbf{(C) } \qquad\textbf{(D) 17} \qquad\textbf{(E) }$

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2021 Fall AMC 10A Problems/Problem 17

Problem