Here is a GeoGebra Constructions App.[br]Try all the tools in the workspace.[br][list=1][*]Find the Undo button.[br]undo[br][img]https://cms-im.s3.amazonaws.com/Ae7hHho213ZZr8BwkThJRGHF?response-content-disposition=inline%3B%20filename%3D%22G1%20undo%20copy2.png%22%3B%20filename%2A%3DUTF-8%27%27G1%2520undo%2520copy2.png&response-content-type=image%2Fpng&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJFC4WL6K24MWHIRQ%2F20200824%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20200824T184624Z&X-Amz-Expires=300&X-Amz-SignedHeaders=host&X-Amz-Signature=d621773492868509d88e2303b6b7b536e5400ef69c645c140fe59592e2cabcc0[/img][img]https://im.kendallhunt.com/assets/expand-b65016df6e2186dc8daa3c8a99c2c901b21df60d53a38770bac05e01cf1887e2.png[/img] Expand Image[br][br][/*][*]Click on the image of 3 stacked segments, the Main Menu, to save your work or go to a new page.[br][/*][/list]
[list=1][*]Which tools do the same work as a straightedge?[/*][/list]
The Constructions App has 3 tools to make a point. In this applet, all 3 point tools have been used.[list=1][*]Open the Style Menu, Drag each point and each line around to see what happens in the Style Menu.[/*][*]Look at the way the points are defined in the Style Menu.[/*][/list]
There are several ways to use the compass tool. First, set up a workspace that looks something like the image:[list=1][*]Use the Constructions App below to recreate this image by following the instructions.[/*][*]Draw circle [i]A[/i] through point [i]B[/i].[/*][*]Draw segment [i]CD[/i] not intersecting the circle centered at [i]A[/i] .[/*][*]Draw point [i]E[/i] not intersecting the circle centered at [i]A[/i] or segment [i]CD.[/i] [/*][/list][br][img]https://cms-im.s3.amazonaws.com/r2uWsKBESud9VzKZS1aWjNeq?response-content-disposition=inline%3B%20filename%3D%22G1.8.1.1%20How%20Do%20Digital%20Construction%20Tools%20Work%20sm.png%22%3B%20filename%2A%3DUTF-8%27%27G1.8.1.1%2520How%2520Do%2520Digital%2520Construction%2520Tools%2520Work%2520sm.png&response-content-type=image%2Fpng&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJFC4WL6K24MWHIRQ%2F20200824%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20200824T184624Z&X-Amz-Expires=300&X-Amz-SignedHeaders=host&X-Amz-Signature=c3a999d6fb5c78ffff7f2f9eae346cce5a4e46cd24076f941f5803d8f3dfae15[/img]
[list=1][*]Select the compass tool and then click on segment [i]CD.[/i] What happens?[/*][*]Now click on the point [i]E. [/i]What happens?[/*][/list]
[list=1][*]Make a new segment [i]EF[/i] that is the same length as [i]CD[/i].[/*][*]Make a circle with the same radius as the circle [i]A[/i] centered at [i]E[/i] .[/*][/list]
IM G Unit 1 Lesson 8 from IM Geometry by Illustrative Mathematics, [url=https://im.kendallhunt.com/HS/students/2/2/1/index.html]https://im.kendallhunt.com/HS/students/2/1/8/index.html[/url]. Licensed under the Creative Commons Attribution 4.0 license, [url=https://creativecommons.org/licenses/by/4.0/]https://creativecommons.org/licenses/by/4.0/[/url].