HP Prime Graphing Wireless Calculator - Manual (Page 32)

28 Geometry
Regular
Polygon
Draws a regular polygon given the first two vertices and the
number of sides, where the number of sides is greater than 1.
If the number of sides is 2, then the segment is drawn. You can
provide CAS variable names for storing the coordinates of the
calculated points in the order they were created. The
orientation of the polygon is counterclockwise.
isopolygon(point1, point2, realn), where realn
is an integer greater than 1.
Example
isopolygon(GA, GB, 6) draws a regular hexagon
whose first two vertices are the points A and B.
Square Tap at one vertex and press E . Tap at another vertex
and press E . The location of the third and fourth
vertices are automatically calculated and the square is drawn.
Curve
Circle Tap at the center of the circle and press E . Tap at a
point on the circumference and press E . A circle is
drawn about the center point with a radius equal to the
distance between the two tapped points.
Keyboard shortcut:
F
You can also create a circle by first defining it in Symbolic
view. The syntax is circle(GA,GB) where A and B are two
points. A circle is drawn in Plot view such that A and B define
the diameter of the circle.
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.
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.