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jolli1 [7]
3 years ago
8

Given: The coordinates of iscosceles trapezoid JKLM are J(-b, c), K(b,c), L(a,0), and M(-a,0).

Mathematics
2 answers:
Vanyuwa [196]3 years ago
7 0

Answer with explanation:

It is given that, coordinates of Isosceles trapezoid J K L M are J(-b, c), K(b,c), L(a,0), and M(-a,0).

To Prove: The diagonals of an isosceles trapezoid are congruent.

Proof:

  Distance formula , that is distance between two points in x y plane is given by

       =\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

Where, (x_{1},y_{1}),(x_{2},y_{2})} are coordinates of two points in the plane.

Length of Diagonal J L

                  =\sqrt{(a+b)^2+(0-c)^2}\\\\=\sqrt{(a+b)^2+c^2}

Length of Diagonal K M

           =\sqrt{(a+b)^2+(0-c)^2}\\\\=\sqrt{(a+b)^2+c^2}

So, we can see that,

  J L = KM  =\sqrt{(a+b)^2+(c)^2}

Hence,The diagonals of an isosceles trapezoid are congruent.

So ,

  KM=\sqrt{(a+b)^2+c^2}

Option C

Anuta_ua [19.1K]3 years ago
4 0
The answer for this question is B. Let me know
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