SOLUTION: explain how to draw a circle that is circumscribed about a triangle. what is the center of a circle called? describe its radius.

Question 547631: explain how to draw a circle that is circumscribed about a triangle. what is the center of a circle called? describe its radius.
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
A circle circumscribed about a triangle is uniquely determined by the triangle's vertices. The center is called the circumcenter (circum = around, as in circumcircle). The radius (usually denoted R) is called the circumradius, and satisfies the property

A = abc/(4R),

where A is the area of the triangle and a,b,c are the sides.
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