HP Prime Graphing NW280AAABA manual Medianline, Perpenbisector, Parallelpoint,line

median_line

Given three points that define a triangle, creates the median of the triangle that passes through the first point and contains the midpoint of the segment defined by the other two points.

median_line(point1, point2, point3)

Example:

median_line(0, 8i, 4) draws the line whose equation is y=2x; that is, the line through (0,0) and (2,4), the midpoint of the segment whose endpoints are (0, 8) and (4, 0).

parallel

Draws a line through a given point that is parallel to a given line.

parallel(point,line)

Examples:

parallel(A, B) draws the line through point A that is parallel to line B.

parallel(3–2i,x+y–5)draws the line through the point (3, –2) that is parallel to the line whose equation is x+y=5; that is, the line whose equation is y=–x+1.

perpen_bisector

Draws the perpendicular bisector of a segment. The segment is defined either by its name or by its two endpoints.

perpen_bisector(segment) or perpen_bisector(point1, point2)

Examples:

perpen_bisector(GC) draws the perpendicular bisector of segment C.

perpen_bisector(GA, GB) draws the perpendicular bisector of segment AB.

perpen_bisector(3+2i, i) draws the perpendicular bisector of a segment whose endpoints have coordinates (3, 2) and (0, 1); that is, the line whose equation is y=x/3+1.

170 Geometry