HP Prime Graphing Wireless Calculator - Manual (Page 28)

24 Geometry
entered using a keyboard shortcut. For example, you can
select the triangle drawing tool by pressing
n . See “Plot
view: buttons and keys” on page 16.
Point
Tap to display a menu and submenus of options for
entering various types of points. The menus and submenus
are:
Point Tap where you want the point to be and press E .
Keyboard shortcut: B
Point On Tap the object where you want the new point to be and press
E . If you select a point that has been placed on an
object and then move that point, the point will be constrained
to the object on which it was placed. For example, a point
placed on a circle will remain on that circle regardless of how
you move the point.
Midpoint Tap where you want one point to be and press E . Tap
where you want the other point to be and press E . A
point is automatically created midway between those two
points.
If you choose an object first—such as a segment—choosing
the Midpoint tool and pressing
E adds a point midway
between the ends of that object. (In the case of a circle, the
midpoint is created at the circle’s center.)
Center Tap a circle and press E . A point is created at the
center of the circle.
Intersection Tap the desired intersection and press E . A point is
created at one of the points of intersection.
Keyboard shortcut:
g
Intersections Tap one object other than a point and press E . Tap
another object and press E . The point(s) where the two
objects intersect are created and named. Note that an
intersections object is created in Symbolic view even if the two
objects selected do not intersect.