![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
Two polygons are similar if and only if their corresponding angles are congruent and the measures
\of their corresponding sides are proportional.
\Since ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a0467e37e3122677b261fc039223b88a.png\")
, so![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=63275abadeb746cb01ba57935a7ef470.png\")
.
Thus, all the corresponding angles are congruent.
\Since from the diagram the corresponding sides of the figures are congruent,
\they are proportional.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The pairs of figures are similar. trapezoid ABCF ∼ trapezoid DEFC.