Special Line Segments
The eight tangent lengths of a tangential quadrilateral are the line segments from a vertex to the points where the incircle is tangent to the sides. From each vertex there are two congruent tangent lengths.
The two tangency chords of a tangential quadrilateral are the line segments that connect points on opposite sides where the incircle is tangent to these sides. These are also the diagonals of the contact quadrilateral.
Read more about this topic: Tangential Quadrilateral
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“The great rule: If the little bit you have is nothing special in itself, at least find a way of saying it that is a little bit special.”
—G.C. (Georg Christoph)
“A line will take us hours maybe;
Yet if it does not seem a moment’s thought,
Our stitching and unstitching has been naught.”
—William Butler Yeats (1865–1939)
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—John Ruskin (1819–1900)