Property
An inscribed angle is said to intersect an arc on the circle. The arc is the portion of the circle that is in the interior of the angle. The measure of the intercepted arc (equal to its central angle) is exactly twice the measure of the inscribed angle.
This single property has a number of consequences within the circle. For example, it allows one to prove that when two chords intersect in a circle, the products of the lengths of their pieces are equal. It also allows one to prove that the opposite angles of a cyclic quadrilateral are supplementary.
Read more about this topic: Inscribed Angle
Famous quotes containing the word property:
“The English language is nobody’s special property. It is the property of the imagination: it is the property of the language itself.”
—Derek Walcott (b. 1930)
“The second property of your excellent sherris is the warming
of the blood.”
—William Shakespeare (1564–1616)
“If property had simply pleasures, we could stand it; but its duties make it unbearable. In the interest of the rich we must get rid of it.”
—Oscar Wilde (1854–1900)