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But you might say how do, how do we figure out what these you know we have this side and that side, so we can figure out the area of this rectangle pretty straight forwardly.
But how would we, how would we figure out the area of this triangle?
All we need is to get the perimeter of all triangles, subtracted out these bases which was the perimeter of the inner pentagon and we are done. What is the area of this this quadrilateral, something that has 4 sides of ABCD?
And this is a little bit we have not seen a figure quite like this just yet, it on the right hand side looks like a rectangle, and on the left hand side looks like a triangle and this is actually trapezoid, but we can actually as you could imagine the way we figure out the area of several triangles splitting it up into pieces we can recognise.
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So the perimeter of the star is really the outsides.
if you take the bases away of each of these triangles.