based on the markings, the angle EFD is 90 degrees because its a right angle. i also just calculated that angle DEF is 30 degrees. this means the measure of the angle EDF is ????

60 degrees.

Since angles in a triangle add up to 180 degrees, we have:

angle E + angle D + angle F = 180 degrees
angle E + 30 degrees + 90 degrees = 180 degrees
angle E = 60 degrees.

an explaination please. a short one, only 1-2 sentences with equations

thanks! i hope this is right!

my aunt is gonna bring me to my first concert so i need to get everything done and this helped so much!!!

You're welcome! I'm glad I could help. Have a fantastic time at your first concert - enjoy every moment!