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sweet-ann [11.9K]
3 years ago
11

Three vertices of a parallelogram are shown in the figure below. Give the coordinates of the fourth vertex. xy , 3−2 , −1−4 , 5−

6
Mathematics
1 answer:
Julli [10]3 years ago
3 0

Answer:

(1,-8)

Step-by-step explanation:

We were given three vertices of a parallelogram to be:

(3,-2), (-1,-4), (5,-6).

After plotting the points as shown in the attachment, we realize (3,-2) and (-1,-4) form a diagonal.

The midpoint of this diagonal using the midpoint formula is (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})

is (\frac{-1+5}{2},\frac{-4+-6}{2})=(2,-5)

Recall that, the midpoint of both diagonals are the same.

Let the fourth point have coordinates (x,y).

Then using the midpoint formula again with (3,-2), we have:

(\frac{3+x}{2},\frac{y+-2}{2})=(2,-5)

This implies that:

x+3=4 and y-2=-10

x=4-3 and y=-10+2

x=1 and y=-8

The coordinates of the fourth point are:

(1,-8)

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