Triangle ABC Triangle DFE. What is the measure of Angle E in degrees?

What other information do you need to prove triangle dac=bca by asa

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

Which statement justifies why angle ebc measures 90?