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rebecca1233
Rectangle ADEF and isosceles trapezoid FBCE both have a base of 4. The lower base angles of the trapezoid are 45° and the legs of the trapezoid are 2. How long is BC? Round your answer to the nearest tenth.
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2. Draw FBCE with BC at the top, at FE as the base. Draw lines straight down from B and C to FE, to form triangles with angles, 45, 45, 90. This is a 1:1:sqrt(2) triangle the length of each of the sections is 6 / sqrt(2) = 3 * sqrt (2) There are 2 of the triangles. 12 - 2 * (3 * sqrt (2)) = 12 - 6 sqrt(2) = 12 - 8.485 = 3.5
thats not an answer option
i showed u the image
can u help me with 2 more please