The measure of an inscribed angle is half the measure of the intercepted arc. That is, m∠ABC=12m∠AOC. This leads to the corollary that in a circle any two inscribed angles with the same intercepted arcs are congruent.
<span>The city of Pompeii is important because of the way
Vesuvius both destroyed and preserved it, but in the 1st Century AD it
had little special significance.</span>
