Previous procedure | Procedures | Next procedure

[Composed by Mr. Quach for His Students]

GeoGebra Geometry | Geometry Book

- Table of Contents | In-class Geometry Book

## Do All of the Following Tasks

##### Task 1 Keep This Procedure on the First Window

- Open the web browser Google
**Chrome**using your computer. - Create three different
**windows**or browser tabs. - On the first window, go to Mr. Quach’s teaching website Ri4C.com.
- Select the menu command Procedures at the top of the web page.
- Select the link taking you to this procedure, Procedure 23002.

##### Task 2 Keep GeoGebra Program on the Second Window

- On the second browser window, go to Mr. Quach’s teaching website Ri4C.com.
- Select the menu command GeoGebra at the top of the web page.
- Select a link to launch the program GeoGebra Geometry.
- Select the icon
**Tools**on the left if not already done. - Click on
**MORE**to expand the toolbox. - Scroll down to the bottom of the toolbox.
- Click on
**MORE**again to expand the toolbox further.

##### Task 3 Get to Know GeoGebra the First Time

If you have never used GeoGebra before, do the following steps:

- Select the tool
**Circle with Center**. - Select two random points to draw a random circle.
- Select the tool
**Segment**. - Select two random points to draw a random segment outside of the circle.
- Select the tool
**Move**, then move the segment inside the circle. - Select the tool “
**Select Objects**” under the toolbox section**Edit**. - Draw a random point on the canvas to select all objects.
- Delete all objects by clicking on the
**Trashcan**icon.

##### Task 4 Keep the Geometry Book on the Third Window

- On the third browser window, go to Mr. Quach’s teaching website Ri4C.com.
- Select the menu command Procedures at the top of the web page.
- Select the link taking you to the Online Geometry Book.
- Go to Unit 2 – Congruence.
- Go to
**Lesson 1, Congruent Parts, Part 1** - You should have only three windows.
- The first window is for the
**procedure**in focus. - The second window is for the
**GeoGebra**program. - The third window is for the online
**book**.

- The first window is for the
- Close all other unnecessary windows to minimize confusion.

##### Task 5 Label the Midpoint on the Longest Side of a Triangle

- Go to
**Lesson 1 Congruent Parts, Part 1** - Read
*1.3: Making Quadrilaterals* - Go to GeoGebra
- Scroll to the top, section
**Basic Tools**in the GeoGebra toolbox. - Select the tool
**Polygon**. - Draw a triangle on the canvas.
- Scroll to the section
**Construct**in the toolbox. - Select the tool
**Perpendicular Bisector**. - Select the longest side of the triangle to draw the perpendicular bisector.
- Scroll to the top, section
**Basic Tools**in the toolbox. - Select the tool
**Point**. - Click at the midpoint on the longest side of the triangle.

##### Task 6 Rotate Your Triangle 180 Degrees Using the Midpoint of the Longest Side

- Scroll to the section
**Transform**in the GeoGebra toolbox. - Select the tool
**Rotate Around Point**. - Click in the middle of the triangle to select it.
- Select the longest side’s midpoint.
- Enter 180 degrees to complete the rotation.
- Scroll to the top, section
**Basic Tools**in the GeoGebra toolbox. - Select the tool
**Move**. - Drag the vertex labels around so you can read each one easily; do not let point names overlap.

##### Task 7 Measure Every Angle of Each Triangle

- Scroll to the section
**Measure**in the GeoGebra toolbox. - Select the tool
**Angle**. - Click in the middle of a triangle to measure all its three angles at once.
- Scroll to the top, section
**Basic Tools**in the GeoGebra toolbox. - Select the tool
**Move**. - Drag the angle labels around so you can read all degree values easily.
- Repeat the previous four steps to measure and label all the angles of the other triangle.

##### Task 8 Label a Triangle Using Your Full Name

- Scroll down to the section
**Media**in the toolbox. - Select the tool
**Text**. - Select a random point in the middle of the triangle.
- Enter your full name.

##### Task 9 Send the Result to Mr. Quach

- You must place your full name on the drawing.
- Take a snapshot or photo of the result of your work.
- The result should look as shown in
**Appendix 2B**below.

- The result should look as shown in
- Send the resulting image to Mr. Quach by email.
- Click here for his email address.

- You should finish this procedure within 12 hours from when Mr. asks you to begin.

##### Appendix 2A Section 1.3 of Lesson 1 in Unit 2

- Table of Contents | In-class Geometry Book