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Introduction to Geometry Designer

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- For iPad

- To turn on the iPad, press the Home button
- Find the Geometry Designer app and tap on it.
- Tap “New Document” to start a new canvas.

Blank Canvas

- A line is defined by two points.
- Tap the .
- Select line.
- Tap the canvas (to dismiss the popover).
- Then tap on the canvas to draw your points.
- A line appears when you are done.

- Drag one of the points with your finger and move the line.
- Double tap on the line.
- Tap“Color.”
- Use the sliders to change the line’s color.
- Tap “Done” and then tap the canvas.

Next Goal

Let’s add a line segment

so that we make a nice

angle.

- Tap the .
- Select line.
- Tap the canvas.
- Tap on one point from your original line. Create your second point somewhere off the line.
- You should have a line and a line segment connected at a single point.

- An angle is defined by three points. The first endpoint, a vertex, and the second endpoint.
- Tap the .
- Select angle.
- Tap the canvas.
- Tap on the three points on the screen. MAKE SURE that the second point you select is the point that the line and segment have in common.

- Tap the .
- Select length.
- Tap the canvas.
- Tap on the line segment.
- Move one endpoint of the line segment. Notice how both measurements change.

- Tap the .
- Select midpoint.
- Tap the canvas.
- Tap on the line segment.
- Drag one of the endpoints of the line segment around. Notice how the midpoint moves too.

Result

Your design should look

Similar to this.

(Note: The measurement

Values may differ)

- Explore on your own.
- Try to figure out what and do.
- Can you draw a right triangle?
- What about an equilateral triangle?