Consider the incomplete paragraph proof shown. Given: Isosceles AABC with AB BC. Prove: LA LC A D C Let D be the midpoint of AC and draw in BD. From the given statements and the definition of isosceles triangle, AB BC. Also, since D is the midpoint of AC By the ,it is also known that BD BD Therefore, AABD ACBD by the Therefore, LA LC because corresponding parts of congruent triangles are congruent. What are the missing parts of the proof? A AD CD Reflexive Property, SAS Congruence Postulate B AD CD. Reflexive Property, SSS Congruence Postulate C C AC BD. Symmetric Property, SAS Congruence Postulate D AC BD Symmetric Property, SSS Congruence Postulate

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