Trapezoid WXYZ has vertices W(−1, 2) , X(2, 2) , Y(3, −1) , and Z(−3, −1) .
Is the trapezoid an isosceles trapezoid?



Select from the drop-down menu to correctly complete the statement.

Respuesta :

she is right its ( is not) just took the test

Answer:

The given trapezium is not an isosceles trapezium.

Step-by-step explanation:

Given:

Coordinates of the vertices of a trapezium:

  • [tex]W (x_w,y_w)=(-1,2)[/tex]
  • [tex]X(x_x,y_x)=(2,2)[/tex]
  • [tex]Y(x_y,y_y)=(3,-1)[/tex]
  • [tex]Z(x_z,y_z)=(-3,-1)[/tex]

A trapezoid is a  convex-quadrilateral whose one pair of opposite sides are parallel but not equal in length, which lead to a pair of non-parallel sides.

  • It holds all the properties of a convex- quadrilateral.
  • When the non-parallel sides of the the trapezium are equal in length then the trapezium is said to be isosceles.

From the attached schematic we find the length of the non-parallel sides.

We know that the distance between two points can be evaluated as:

[tex]XY=\sqrt{(x_x-x_y)^2+(y_x-y_y)^2}[/tex]

[tex]XY=\sqrt{(2-3)^2+(2-(-1))^2}[/tex]

[tex]XY=\sqrt{10}[/tex] ..............................................(1)

Now,

[tex]ZW=\sqrt{(x_z-x_w)^2+(y_z-y_w)^2}[/tex]

[tex]ZW=\sqrt{(-3-(-1))^2+(-1-2)^2}[/tex]

[tex]ZW=\sqrt{13}[/tex] .........................................(2)

Therefore, from eq. (1) & (2) we can conclude that the given trapezium is not an isosceles trapezium.

Ver imagen creamydhaka