9000121709

Consider a rectangle $ABCD$ of a special ratio between the length and the width: if $E$, $F$, $G$ and $H$ denote the midpoints of the sides $AB$, $BC$, $CD$ and $DA$, respectively, then the measure of the angle $AEH$ is ${25}^{\circ }$. Find the measure of the angle $EFG$.