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Quadrilateral
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Search results:
1.
Area of quadrilateral
A
=
1
2
[
(
x
1
−
x
2
)
(
y
1
+
y
2
)
+
(
x
2
−
x
3
)
(
y
2
+
y
3
)
+
(
x
3
−
x
4
)
(
y
3
+
y
4
)
+
(
x
4
−
x
1
)
(
y
4
+
y
1
)
]
A=\dfrac{1}{2} \left[(x_1-x_2)(y_1+y_2)+(x_2-x_3)(y_2+y_3)+(x_3-x_4)(y_3+y_4)+(x_4-x_1)(y_4+y_1) \right]
A
=
2
1
[
(
x
1
−
x
2
)
(
y
1
+
y
2
)
+
(
x
2
−
x
3
)
(
y
2
+
y
3
)
+
(
x
3
−
x
4
)
(
y
3
+
y
4
)
+
(
x
4
−
x
1
)
(
y
4
+
y
1
)
]
Analytic geometry
Area
Quadrilateral
Variables:
A(x1,y1)
→
Quadrilateral vertice
B(x2,y2)
→
Quadrilateral vertice
C(x3,y3)
→
Quadrilateral vertice
D(x4,y4)
→
Quadrilateral vertice
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