Quadrilaterals

This item is taken from IGCSE Mathematics (0580) Paper 32 (Extended) of October/November 2012.

To deal with this item, let us summarize the details of the problem:
   (a) Syllabus Area: Geometry
   (b) Specific topics: Quadrilaterals and Symmetry

Let us start with the first quadrilateral.

Now, the second quadrilateral.

The third quadrilateral:

The fourth quadrilateral:

To summarize the data about the four (4) quadrilaterals,

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