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Articles : The Geometry App

The Geometry app delivers the power of a dynamic geometry app in the palm of your hand. And its CAS integration gives you an analytic geometry app so you can prove your conjectures.

Press I and tap on the Geometry icon. The app opens in Plot view. The zoom button (Zoom) opens the familiar Zoom menu with the same options as the other HP apps. Each of the other menu buttons opens menus to create various geometric objects:

• Zoom: zoom in or out, etc.
• Point: points, points on objects, midpoints, intersections, etc.
• Line: segments, lines, tangents, perpendiculars, etc.
• Polygon: triangles, quadrilaterals, and special polygons
• Curve: circles and other conic sections, locus of points, graphs of functions, etc.
• Transfor: translation, reflection, dilation, etc.

Things you can do:

• Tap and drag to scroll the graphing window.
• Press + and - to zoom in and out on the cursor.
• Tap any point and press E to select it.
• Drag any selected point with your finger to move it.
• Press Y to view, edit, and create symbolic definitions of the objects in Plot view (and to hide or show them).
• Press M to view, edit, and create measurements and calculations based on the objects in Symbolic view (and to show or hide them in Plot view).

Check out Exploring Quadrilaterals example to get familiar with this amazing app.

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