Draw polygon in QML

[tuxit]

Hello,
i am trying to draw polygon in QML.
I can draw rectangle with

Rectangle {  //rectangle  properties}

Rectangle {  //rectangle  properties}

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i imagine i can draw polygons with

Polygon {  //polygon points  }

Polygon {  //polygon points  }

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i searched and found it can be like this

import Box2D
 
Polygon {  //polygon points   }

import Box2D

Polygon {  //polygon points   }

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my questions:

i can not succeed to compile box2d source code.

(i am new to qt and c++, understand qml a little but afraid from writing a piece of c++ and use it in QML)

so, could not i use some component of qt self libraries without integrating c++ and qml?

i found QPolygonF but only in c++ code examples, is not there a way to use it in QML?

low possibility, but does somebody have box2d libraries compiled for linux?

thanks for any idea