What are the coordinates of vertices of quadrilateral ABCD? use the coordinates to find the length of DA. A(-5,-4)
B (1,4)
C(4,0)
D(1,-4)
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We can conclude that the length of DA is 6.

For a quadrilateral defined as ABCD, the vertices of the quadrilateral are the points in the name, so the four vertices are the points A, B, C, and D.

These are given, so we know that the vertices are the points:

A(-5,-4)

B (1,4)

C(4,0)

D(1,-4)

Now we want to find the length of DA, this is the distance between points D and A.

Remember that the distance between two points (x₁, y₁) and (x₂, y₂) is given by:

Then for the case of the points:

A (-5, -4) and D (1, -4)

the distance is given by:

Then we can conclude that the length of DA is 6.

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