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Rectangle ADEF and isosceles trapezoid FBCE both have a base of 20. The lower base angles of the trapezoid are 45° and the legs of the trapezoid are 9. How long is BC? Round your answer to the nearest tenth.

Rectangle ADEF and isosceles trapezoid FBCE both have a base of 20. The lower base angles of the trapezoid are 45° and the legs of the trapezoid are 9. How long class=

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imlittlestar

Answer[tex]\\[/tex]ΔABF is an isosceles right triangle,BC=20-18[tex]\sqrt{2}[/tex]

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