contestada

The coordinates of the vertices of a regular polygon are given. Find the area of the polygon to the nearest tenth.
A(0, 0), B(2, -2), C(0, -4), D(-2, -2)

Respuesta :

Answer:

The area is equal to [tex]8\ units^{2}[/tex]

Step-by-step explanation:

we have

A(0, 0), B(2, -2), C(0, -4), D(-2, -2)

Plot the figure

The figure is a square (remember that a regular polygon has equal sides and equal internal angles)

see the attached figure

The area of the square is

[tex]A=AB^{2}[/tex]

Find the distance AB

the formula to calculate the distance between two points is equal to

[tex]d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}[/tex]

substitute the values

[tex]AB=\sqrt{(-2-0)^{2}+(2-0)^{2}}[/tex]

[tex]AB=\sqrt{(-2)^{2}+(2)^{2}}[/tex]

[tex]AB=\sqrt{8}[/tex]

[tex]AB=2\sqrt{2}\ units[/tex]

Find the area of the square

[tex]A=(2\sqrt{2})^{2}[/tex]

[tex]A=8\ units^{2}[/tex]

Ver imagen calculista