MathDB
Regular Octagon

Source:

February 27, 2008
geometrytrapezoid

Problem Statement

A regular octagon ABCDEFGH ABCDEFGH has sides of length two. Find the area of ADG \triangle{ADG}. (A)\ 4 \plus{} 2 \sqrt{2} \qquad (B)\ 6 \plus{} \sqrt{2} \qquad (C)\ 4 \plus{} 3 \sqrt{2} \qquad (D)\ 3 \plus{} 4 \sqrt{2} \qquad (E)\ 8 \plus{} \sqrt{2}