HP Prime Graphing NW280AAABA Circumcircle is the circle, That passes through each, After each tap

Special
Circumcircle	A circumcircle is the circle
	that passes through each of
	the triangle’s three vertices,
	thus enclosing the triangle.
	Tap at each vertex of the
	triangle, pressing E
	after each tap.
Incircle	An incircle is a circle that is
	tangent to each of a
	polygon’s sides. The HP
	Prime can draw an incircle
	that is tangent to the sides of
	a triangle.
	Tap at each vertex of the
	triangle, pressing E
	after each tap.
Excircle	An excircle is a circle that is tangent to one segment of a
	triangle and also tangent to the rays through the segment’s
	endpoints from the vertex of the triangle opposite the segment.
	Tap at each vertex of the
	triangle, pressing E
	after each tap.
	The excircle is drawn tangent
	to the side defined by the last
	two vertices tapped. In the
	example at the right, the last
	two vertices tapped were A
	and C (or C and A). Thus the excircle is drawn tangent to the
	segment AC.

Geometry 159