You know the following information about triangle ABC and triangle DEF AB = DE ∠A≅∠D What additional information is needed to prove that the triangles are congruent by SAS? A) BC = EF
B) AB = DE
C) AC = DF
D) ∠B ≅ ∠E

What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio