anonymous
  • anonymous
If given only the coordinates of the vertices, describe a process you could use to find the perimeter and area of a parallelogram. I've got my answer for finding perimeter, but I can't think of a way to calculate the area without plotting the points down and determining the height by making a perpendicular bisector for the base. So basically my question is how do you calculate the area of a parallelogram with only the knowledge of the points.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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amriju
  • amriju
do u know vectors??
anonymous
  • anonymous
I don't.
amriju
  • amriju
ok...leave it...so u know the lenght of the two sides and the angle between them???...that can always be determined from the points...so if the angle is x...then area=A*B*sinx...ifA nd B are the two unequal sides of the parallelogram

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anonymous
  • anonymous
Ok, thanks! I forgot about sine, cosine and tangent.
amriju
  • amriju
:)
amriju
  • amriju
BTW this concept comes from vectors...where area is defined a vector of magnitude AxB..The x is called cross product and means |ABsinx|

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