BIB Identify the radius and the center of a circle whose equation is (x - 5)2 + y2 = 81.
The radius of the circle is
units.
The center of the circle is at?

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .

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