Draw a trapezoid

Draw a trapezoid if given a = 7 cm, b = 4 cm, c = 3.5 cm, diagonal AC = 5cm. Solve as a construction task.

Result

x = (Correct answer is: ?) Wrong answer

Solution:

1.AB,AB=a=7 cm 2.k1;k1(A,r1=AC=5 cm) 3.k2;k1(B,r2=BC=4 cm) 4.C;C=k1k2 5.p;pAB,Cp 6.D;Dp;CD=c=3.5 cm 7.ABCD  x=AD x=?1. AB, |AB|=a=7 \ cm \ \\ 2. k_{1}; k_{1}(A, r_{1}=|AC|=5 \ cm) \ \\ 3. k_{2}; k_{1}(B, r_{2}=|BC|=4 \ cm) \ \\ 4. C ; C=k_{1} \cap k_{2} \ \\ 5. p ; p || AB, C \in p \ \\ 6. D; D \in p; CD=c=3.5 \ cm \ \\ 7. ABCD \ \\ \ \\ x=|AD| \ \\ x=?



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