Subcategories of Quadrilaterals

Known Coordinates	Squares (5) Diagonals Area and Perimeter	Diagonals	Rectangles (4) Area and Perimeter Diagonals
Known Diagonals	Rhombi (11) Diagonals Area and Perimeter Angle Measures Altitude	1 Known Angle	Parallelograms (11) Angle Measures Area and Perimeter Altitude Diagonals
Known Bases and Height	Trapezoids (13) Misc. Diagonals Angle Measures Area and Perimeter	Known Diagonals and 1 Kno...	Kites (9) Angle Measures Area and Perimeter Diagonals
Diagonals	Cyclic Quadrilaterals (3) Diagonals Angle Measures Area and Perimeter	3 Known Sides and 2 Known...	General (12) Angle Measures Diagonals Area and Perimeter
Finsler-Hadwig Theorem	Misc. Quadrilaterals (1) Finsler-Hadwig Theorem