In the figure below, angle ABC is congruent with angle DEC and angle GFE is congruent with angle DCE. Point c is the point of intersection between line segment AG and line segment BD, while point E is the point of intersection between line segment AG and line segment DF. Prove that Triangle ABC is congruent to triangle GEF. Explain your answer.

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18 }, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.