Formula to find the area of a quadrilateral in coordinate geometry
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⇒ Area of a general Quadrilateral maths=12×diagonal×(Sum of height of two triangle)
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★★★hope this may help u!!!★★★
___________________________________________________________
⇒ Area of a general Quadrilateral maths=12×diagonal×(Sum of height of two triangle)
___________________________________________________________
★★★hope this may help u!!!★★★
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In geometry if one side of quadrilateral is 90 °
So,join the opposite sides of the quadrilateral which is opposite to the 90°.
Like if ABCD is a quadrilateral and angle B is 90° so join AC side .
In ∆ABC
Find the side AD by theoram
AC^2+=AB^2+BC^2
And fide it by area of triangle
For ∆ADC
Find it area by
S =a+b+c/2
Area of triangle = √s(s-a)(s-b)(s-c)
And add both area =area of quadrilateral
So,join the opposite sides of the quadrilateral which is opposite to the 90°.
Like if ABCD is a quadrilateral and angle B is 90° so join AC side .
In ∆ABC
Find the side AD by theoram
AC^2+=AB^2+BC^2
And fide it by area of triangle
For ∆ADC
Find it area by
S =a+b+c/2
Area of triangle = √s(s-a)(s-b)(s-c)
And add both area =area of quadrilateral
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