Special Cases
Examples of tangential quadrilaterals are squares, rhombi, and kites. The kites are exactly the tangential quadrilaterals that are also orthodiagonal. If a quadrilateral is both tangential and cyclic, it is called a bicentric quadrilateral.
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“People generally will soon understand that writers should be judged, not according to rules and species, which are contrary to nature and art, but according to the immutable principles of the art of composition, and the special laws of their individual temperaments.”
—Victor Hugo (1802–1885)
“For the most part, we are not where we are, but in a false position. Through an infirmity of our natures, we suppose a case, and put ourselves into it, and hence are in two cases at the same time, and it is doubly difficult to get out.”
—Henry David Thoreau (1817–1862)