+0

# Coordinates

0
77
1

A quadrilateral has four points A(0,1), B(1,-3), C(5,-2) and D(4,0) as coordinates What is the area of quadrilateral ABCD?

Apr 30, 2022

#1
+2455
+1

We can enclose the shape in a $$5 \times 4$$ grid. From here, we can subtract the areas of the regions that do not lie in the shaded shape (see graph below)

Doing so, we find the area is $$20 - 2 - 2 - 2 - 1 - 1 = \color{brown}\boxed{12}$$

Here is the graph:

Apr 30, 2022

#1
+2455
+1

We can enclose the shape in a $$5 \times 4$$ grid. From here, we can subtract the areas of the regions that do not lie in the shaded shape (see graph below)

Doing so, we find the area is $$20 - 2 - 2 - 2 - 1 - 1 = \color{brown}\boxed{12}$$

Here is the graph:

BuilderBoi Apr 30, 2022