Draw an isosceles trapezoid so that its top and bottom edges are 5cm and 11cm in length and 4cm in height, and calculate the perimeter of the isosceles trapezoid Just started school not long, geometry, do not make what square root what thing Pythagorean theorem has not been learned yet

For isosceles trapezoid ABCD, ad ∥ BC, respectively through a, D, am ⊥ BC in M, DN ⊥ BC in n
∵ amnd is a rectangle, ∵ ad = Mn, am = DN = 4
RT⊿ABM≌RT⊿DNC(HL)
∴BM=CN=(11-5)÷2=3
{AB = CD = 5 (Pythagorean theorem)
The circumference is 5 + 11 + 2 × 5 = 26

Draw an isosceles trapezoid, make its top and bottom length 5cm, 11cm and height 4cm respectively, and calculate the perimeter and area of the isosceles trapezoid

As shown in the figure, CD = 5, ab = 11, de = 4 ∵ AB = 11, CD = 5 ∵ AE = BF = 3 ∵ de = 4 ∵ ad = 5 ∵ perimeter = 5 + 11 + 5 + 5 = 26, area = (5 + 11) × 4 △ 2 = 32

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