What is GE ?

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units
The figure shows what appears to be obtuse triangle E F G with obtuse angle E. Point Z is on side G E. Single tick marks pass through segments G Z and Z E. Point Y is on side F G. Double tick marks pass through segments F Y and Y G. Point X is on side E F. Triple tick marks pass through segments E X and X F. Segment X Y is drawn and has length 5. Segment Y Z is drawn and has length 4.6