Pic Title: Right angle trapezoid area formula Related Phrase: Area formula Related pictures: Right angle trapezoid area formula Source: http://pic.wenwen.soso.com/ Pic Description: 　　ABCD in trapezoidal, DC parallel AB, ∠ D = 90 °, AD = 4cm, AC = 5cm, the area of ​​the trapezoid ABCD ABCD ... in trapezoidal, DC parallel to AB, ∠ D = 90 °, AD = 4cm, AC = 5cm, the area of ​​the trapezoid ABCD, S = 18cm ², Translated by Google No. / 7 Picture               Slide Show

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