Types of triangles based on sides

Objectives
Recognize the triangles based on the measures of the sides

Prerequisites/Instructions, prior preparations, if any
Prior knowledge of point, lines, angles, elements of triangle

Materials/ Resources needed

 * Digital : Computer, geogebra application, projector.
 * Non digital : Worksheet  and pencil.
 * Geogebra files : “5. Types of  triangle by sides.ggb”

Process (How to do the activity)

 * Students should recognize the elements of a triangle – sides and angles.
 * What are the measures of the sides of a triangle, are the measurements of the sides equal or different.
 * Establish that different triangles are formed with the different measures of the sides: when all sides are different, when any two sides are equal and when all sides are equal.
 * Children can note the measures of the sides in the worksheet for different triangles to conclude the type of triangles based on the sides.
 * Is the triangle formed for any measure of the sides. When does the triangle not form. What is the relation between the 3 sides for the triangle to be formed.
 * Evaluation at the end of the activity


 * Are children able to recognize the types of triangles when the sides are specified.
 * Have children been able to conclude when a triangle is formed given the three sides.