geometry!
posted by please help me out!!!! .
ABCDE is a regular pentagon. On the outside of AB, we construct a square ABFG. What is the measure (in degrees) of ∠EAG?

Angle EAB + Angle BAG
108 + 90 = 198 degrees 
The above answer is incorrect. Its is:
360(108+90)= 360198=162 
in the diagram ,abc and chk are congruent .given that ab =14 cm ac=18 cm ,hk= 27 cm,bac=chk=114 and abc = 38 ,find chk the length of kb