Integrated Math 1
posted by Tifini .
In rectangle ABED, AC = 7 cm and DE = 10 cm. What is the length of AD? If necessary, round your answer to the nearest tenth.

Where is C in rectangle ABED?

the center. its a rectangle broken into the triangles

CE must be 7 also, as C bisects AE.You have a right triangle AED, so AE=14 (hypotenuse), side DE 10.
AD=sqrt(14^210^2) 
ty5h7l,