ICT student textbook/Getting introduced to triangle properties

Getting introduced to triangle properties
In this activity, you will explore how angles are formed and the different kinds of angles

Objectives

1. Using Geogebra to accurately construct and label geometric figures
2. Visualizing how triangles are formed
3. Understanding properties of triangles

What prior skills are assumed

1. Basic familiarity with the Geogebra tool bar and the different features
2. Working with text document and adding pictures

What resources do you need

1. Working computer lab with projector
2. Computers installed with Ubuntu Operating System
3. Handout for Ubuntu
4. Handout for Geogebra
5. Geogebra files for demonstration

What digital skills will you learn

1. Learning to work with interactive applications, with given input
2. Creating, saving files with Geogebra
3. Accurately drawing and measuring geometry figures
4. Inserting pictures and completing the worksheet

Description of activity with detailed steps

Teacher led activity

We will continue the work you did with Geogebra last year to learn more mathematics. Your teacher will display the file below and ask you to explore how triangle can be constructed.

You will use the following Geogebra files which for this lesson. (You can click on the image to download the Geogebra file, you can do this for any Geogebra file in the text book)

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Your teacher will demonstrate the following to you:

1. Drawing lines
2. Plotting intersection points
3. Identifying and measuring angles
4. Marking a triangle
5. Identifying vertically opposite angles
6. Identifying exterior angles
7. Verifying angle sum property
8. Marking segments and measuring length

Student activities

Click here to download the worksheet. After the demonstration lesson, you will learn to construct the following:

1. Three intersecting lines with the formation of a triangle
2. Exploring the properties of a triangle and completing a worksheet

Portfolio

1. Your completed Geogebra files will be the addition to your digital portfolio.
2. Completed worksheet