In the master's thesis, we will present the relation between the perimeter and the area for convex quadrilaterals.
Using the equation p = 1/2or, where o is the perimeter and r is the radius of the incircle, we will represent the relation between the perimeter and the area of convex quadrilaterals. We will show that the relation between the area and the perimeter of quadrilaterals, that have an incircle, is connected to the radius of the incircle. We will take a closer look at the relation for tangent equilateral trapezoid.
With quadrilaterals that do not have an incircle, we will use internal tangent circles.
Here is a link p/o connected to the virtual radius, which is harmonic mean of radii of the inner tangent circles. In this thesis, we will explore the connection p/o for any convex quadrilateral that does not have an incircle.
We will also include the relation p/o for cyclic quadrilaterals. We will take a closer look at the rectangle, the rhomboid and the trapezoid, which do not have an incircle.
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