Question

(05.05)The coordinates below are the three vertices of a rectangle. Identify the fourth coordinate and the area of the rectangle.

Answer 1

The vertices of the rectangle are

A(-3,3)

B(-3,-2)

C(4,-2)

the coordinate of D will have the same x part of C and the same y part of A

D(4,3)

In order to calculate the Area we need to know the width and the length of the rectangle

width=5 distance between point A and B or point D and C

lenght=7 distance between point A and D or point B and C

Area=width*lenght=5*7=35 u^2