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Forum: Construction Questions

Post specific constructions questions in this forum.

  1. Sticky Thread Sticky: Forum for construction questions

    If you have a how-to question, please post to the Construction Questions forum. You can attach sketches to your post. Happy sketching! ...

    Started by Elizabeth DeCarli, 05-31-2011 05:56 PM
    • Replies: 0
    • Views: 3,388
    05-31-2011 05:56 PM Go to last post
  1. Help Constructing an n-gon

    I am trying to construct an inscribed n-gon to represent a pizza with n slices. This is for my 7th grade fraction lessons. I know it could be...

    Started by MsenoJ, 09-29-2012 03:24 PM
    • Replies: 3
    • Views: 5,342
    10-09-2012 01:22 PM Go to last post
  2. Reset Buttons?

    Hi All, I have created a Transformation activity for my students. Currently the only way I know to reset their work from class to class is to make...

    Started by OldManMath, 03-22-2012 05:38 AM
    reset, save changes, transformations
    • Replies: 2
    • Views: 3,976
    04-30-2012 07:42 PM Go to last post
  3. Open endpoints on segments and rays

    Its not really a contruction question... I want to create an open circle for an endpoint. This would seem logical to be in the point style...

    Started by PapaG, 09-20-2011 09:49 AM
    • Replies: 4
    • Views: 3,940
    10-03-2011 10:03 AM Go to last post
  4. Graphs terminate with arrows

    I notice that when graphing, at times the graph terminates at one or both ends with an arrow. For example, graphing polar equation f(theta) = 7 * cos...

    Started by Robert Pitts, 06-05-2014 09:17 PM
    • Replies: 2
    • Views: 3,559
    06-07-2014 10:59 PM Go to last post
  5. Constructing an accurate tangent line along the exterior of a circle

    I am using Geometer's Sketchpad version 5.04 and I wanted to illustrate the the law that: 1. If a secant segment and a tangent segment to the...

    Started by Robwinfield, 06-08-2012 01:37 PM
    • Replies: 9
    • Views: 18,119
    06-20-2012 05:12 AM Go to last post
  6. How do I make angles that are not even multiples of 360 such as 60, 30 and exact leng

    How do I make an angle that is π3 or π6, for example? Bisect is an option but trisect is not. Also, is there a way to type in the measurement one...

    Started by Robwinfield, 06-12-2012 08:13 AM
    • Replies: 3
    • Views: 3,781
    07-01-2012 06:24 AM Go to last post
  7. How do change the default period in a sine or cosine wave to π or 3π instead of 2π

    OK, so in the trigonometry graph I am able to plot phase shift and vertical shifts of sine and cosine waves. However, I am not able to get it to...

    Started by Robwinfield, 06-20-2012 07:30 AM
    • Replies: 4
    • Views: 17,679
    01-21-2013 03:05 AM Go to last post
  8. How do I construct an arc sector of a circle (a slice of pizza shape)

    Dear Sketchers, I want to use the area of a sector equation, so I need to be able to construct a polygon from a central angle of the circle that...

    Started by Robwinfield, 07-22-2012 12:08 PM
    • Replies: 2
    • Views: 5,876
    07-22-2012 07:12 PM Go to last post
  9. How to make an "Erase Traces" button

    I recently received an inquiry from Nick, a high school student: "It would be very helpful to add an action button that erases all traces. ...

    Started by Scott, 09-13-2013 10:44 AM
    • Replies: 0
    • Views: 3,816
    09-13-2013 10:44 AM Go to last post
  10. Hyperbolic Line Segment Tool - Venema

    Does anyone know a good method that I can use to build a Poincare line segment in The Geometer's Sketchpad? I can build a ray and a line tool no...

    Started by spitfiredd, 03-07-2015 04:06 AM
    construction problem, hyperbolic, line segment
    • Replies: 1
    • Views: 3,388
    03-08-2015 08:59 AM Go to last post
  11. Advanced Techniques for Algebra

    We had a pretty interesting Tech Support question that came in recently: "I'd like to create a graph of the relation |y|=x^3-x. How do I do it?" ...

    Started by Stek, 11-18-2010 08:21 PM
    • Replies: 8
    • Views: 6,386
    11-08-2011 09:16 PM Go to last post
  12. Measurements Based on a Defined Unit

    Another interesting tech-support question came in yesterday: "It would be extremely convenient if measurements of length could be given in terms a...

    Started by Stek, 09-30-2011 10:02 AM
    custom tool, measure, unit
    • Replies: 0
    • Views: 2,519
    09-30-2011 10:02 AM Go to last post
  13. Showing Construction Arcs

    Over the years I've received several support questions like this one: "I would like to leave the remnants of construction lines in the vicinity of an...

    Started by Stek, 11-28-2011 08:23 PM
    • Replies: 0
    • Views: 2,950
    11-28-2011 08:23 PM Go to last post
  14. Constructing an Annulus

    A participant in an online course just wrote me to ask how to construct an annulus (the region between two concentric circles). She tried...

    Started by Stek, 03-12-2012 05:45 AM
    circle annulus locus
    • Replies: 0
    • Views: 4,160
    03-12-2012 05:45 AM Go to last post
  15. Graphing Hyperbolas and Ellipses

    A user recently asked how to graph a hyperbola. Because hyperbolas and ellipses cannot be expressed explicitly as functions, they must be graphed as...

    Started by Stek, 03-27-2012 07:17 PM
    • Replies: 0
    • Views: 5,894
    03-27-2012 07:17 PM Go to last post
  16. Play Video or Audio from your Sketch

    I've just posted an example of playing video and audio from a sketch, using Link buttons. Link buttons are very flexible. In addition to taking...

    Started by Stek, 03-27-2012 07:41 PM
    audio, link buttons, media, video
    • Replies: 0
    • Views: 2,780
    03-27-2012 07:41 PM Go to last post
  17. Measurements in Graph Units

    I had a question recently about making measurements in graph units: length measurements of segments and arcs, radii of circles and arcs, and...

    Started by Stek, 04-12-2012 03:22 PM
    arcs, circles, graph units, measurements
    • Replies: 0
    • Views: 3,715
    04-12-2012 03:22 PM Go to last post
  18. Coincident Points Construction Problem

    An online course participant had a question about a rhombus construction that failed the drag test. The failure occurred because vertex C was a point...

    Started by Stek, 05-03-2012 12:32 AM
    coincident points, construction problem, drag test, rhombus
    • Replies: 0
    • Views: 2,574
    05-03-2012 12:32 AM Go to last post
  19. Function Transformations

    We had a tech support question today: "How can I drag around the function plot without moving the grid along with it?" In Sketchpad, every...

    Started by Stek, 09-20-2012 08:05 PM
    function, translation
    • Replies: 0
    • Views: 2,169
    09-20-2012 08:05 PM Go to last post
  20. Choose a default color for the grid (and use Custom Tools for other formatting magic)

    A user had a question today: his printer prints very lightly, and the light gray grid lines are hard to see on his students' printouts. The answer...

    Started by Stek, 12-04-2012 07:24 PM
    coordinate system, custom tool, grid
    • Replies: 0
    • Views: 3,443
    12-04-2012 07:24 PM Go to last post

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