HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Pobierz pdf (Strona 242)

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Parallelogram

Draws a parallelogram given three of its vertices. The fourth point is calculated automatically but is not

dened symbolically. As with most of the other polygon commands, you can store the fourth point’s

coordinates into a CAS variable. The orientation of the parallelogram is counterclockwise from the rst point.

parallelogram(point1, point2, point3)

Example:

parallelogram(0,6,9+5i) draws a parallelogram whose vertices are at (0, 0), (6, 0), (9, 5), and (3,5).

The coordinates of the last point are calculated automatically.

Rhombus

Draws a rhombus, given two points and an angle. As with many of the other polygon commands, you can

specify optional CAS variable names for storing the coordinates of the other two vertices as points.

rhombus(point1, point2, angle)

Example:

rhombus(GA, GB, angle(GC, GD, GE)) draws a rhombus on segment AB such that the angle at

vertex A has the same measure as ∡DCE.

Rectangle

Draws a rectangle given two consecutive vertices and a point on the side opposite the side dened by the rst

two vertices or a scale factor for the sides perpendicular to the rst side. As with many of the other polygon

commands, you can specify optional CAS variable names for storing the coordinates of the other two vertices

as points.

rectangle(point1, point2, point3) or rectangle(point1, point2, realk)

Examples:

rectangle(GA, GB, GE) draws a rectangle whose rst two vertices are points A and B (one side is

segment AB). Point E is on the line that contains the side of the rectangle opposite segment AB.

rectangle(GA, GB, 3, p, q) draws a rectangle whose rst two vertices are points A and B (one side

is segment AB). The sides perpendicular to segment AB have length 3*AB. The third and fourth points are

stored into the CAS variables p and q, respectively.

Polygon

Draws a polygon from a set of vertices.

polygon(point1, point2, …, pointn)

Example:

polygon(GA, GB, GD) draws ΔABD

194 Chapter 9 Geometry

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