In the coordinate plane shown, how far apart are points e and d? explain how you can use the pythagorean theorem to determine this.

Point E is located at (-3,5)
Point D is located at (3,-5)
 

using the Pythagorean theorem formula:

Distance = sqrt((x2-x1)^2 + (Yy2-y1)^2)

distance = sqrt ((3- -3)^2 + (-5,5)^2)

distance = sqrt(136)

distance = 2sqrt(34) which is approximately 11.66 units 

17 is c. congruent means equal in size