Suppose that AB = AC = CD and
AD = BD. What is the measure of
6 ADC in degrees?	Choose the correct answer:	A) 24	B) 28	C) 32	D) 36	E) 40
Let be the measure of \ADC. Then since ADC is isosceles, we obtain that   the measures of \CAD and \DCA are and 180 􀀀 2, respectively. It follows that   \ACB has measure 2. Since ACB is isosceles, we obtain that the measures of \CBA   and \BAC are 2 and 180 􀀀 4, respectively. Since ADB is isosceles, we deduce that   the measures of \CBA and \BAD are the same. This gives that 2 = (180 􀀀 4) +   which implies 5 = 180. Therefore, = 36.   correct answer 36
<result>D</result>
Suppose that AB = AC = CD and
AD = BD. What is the measure of
6 ADC in degrees?