![]() ![]() This session assumes you can do the following with Geometer’s Sketchpad: construct points and segments construct points on objects create midpoints construct lines that are parallel or perpendicular to given lines measure distances and angles and perform calculations on your measurements. If not, or if you would like a refresher, please go to the tutorial.Īs you learned in Session 1, there is a difference between drawing a figure and constructing a figure. If you are using a pencil and manual drawing tools, constructing requires that you use a compass and a straightedge. ANSWERS TO GSP5 CONSTRUCTING PERPENDICULAR BISECTORS MANUAL When you construct an object using dynamic geometry software, you use the software’s tools to give the figure the necessary characteristics. Using Geometer’s Sketchpad, look at the following ways that you can construct a circle: a. Notice that wherever you ended your circle, another point appears. ![]() What happens when you move that point? What happens when you move the center point? The distance of this point from the center defines the radius of the circle. Place two points anywhere on your sketch. What happens if you select the points in the opposite order? Select them both, and construct a circle using the Construct menu. Place a point anywhere on your sketch, and then draw a segment in a different location. Select both objects, and use the Construct menu to construct another circle. What does the point do? What does the segment do? Try moving both around and changing the size of the segment. This section of Part A is designed to introduce you to The Geometer’s Sketchpad, a dynamic geometry software program from Key Curriculum Press. One of the major benefits of dynamic geometry Sketchpad and software like it is the ability to quickly alter geometric objects while preserving the properties of their construction. For example, you can use Sketchpad to create a triangle with one right angle, and then explore the relationship between the three side lengths by moving the triangle’s points around while preserving the constructed right angle. In this way, Sketchpad and software like it can allow users to discover geometric properties and come up with conjectures that will lead to proof.Īlthough this section is designed for new users of Sketchpad, users who are only familiar with an older version of Sketchpad may also find it useful.Ī limited version of Sketchpad 5 is available online at. Please note that this software is copyrighted and subject to a Fair Use Agreement. ANSWERS TO GSP5 CONSTRUCTING PERPENDICULAR BISECTORS SOFTWARE Versions are available for Macintosh and Windows operating systems. ANSWERS TO GSP5 CONSTRUCTING PERPENDICULAR BISECTORS WINDOWS When you start Sketchpad, you will see six tools on the left side of the window. Arrow Tool - Use this tool to select or drag objects.Point Tool - Use this tool to place points in the sketch.Compass Tool - Use this tool to create circles by center and radius.Straightedge Tool - Use this tool to create line segments.Text Tool - Use this tool to add captions and name points in a sketch.(This tutorial will not use the Custom Tool.) ![]() Here is a step-by-step process for how to use Sketchpad to construct a triangle: Straightedge Tool - can be used to draw line segments (default), rays, or lines Clicking and holding the mouse button can change these tools:Īrrow Tool - can be used to select objects (default) or to rotate or translate objects Two of the five major tools have a small arrow in their lower right corner. ANSWERS TO GSP5 CONSTRUCTING PERPENDICULAR BISECTORS HOW TO You should see a red dot at the tip of the cursor, which represents a point you can place in the sketch. Move the mouse to another location, and again, click once to create another point. You should see three red dots in the sketch. The third point should have a purple highlight this indicates that it is a selected object.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |