View source for Construction of a triangle with side, angle and sum of other two sides

The triangle inequality states that the sum of the lengths of any two sides of a triangle must be greater than or equal to the length of the third side. Construction of a triangle with given parameters sum of two sides and an angle follows SAS congruence rule.

=== Objectives ===
To construct a triangle with side, angle and sum of other two sides

===Estimated Time===
30 minutes

=== Prerequisites/Instructions, prior preparations, if any ===
Prior understanding of point, lines and angles, elements of triangle, properties of 	triangle

===Materials/ Resources needed===
* Digital : Computer, geogebra application, projector.
* Non digital : Worksheet and pencil
* Geogebra files :  “[https://ggbm.at/yysjtkj4 Triangle Construction(1side-1angle-sum of other 2 sides)]”
{{Geogebra|yysjtkj4}}

===Process (How to do the activity)===
* Use the slider to set the base and the given angle
* The difference of the other two sides is marked using the slider
* Follow the steps for construction – step1, step2
* Students can vary the sliders to observe the changes reflected in the triangle.
'''Evaluation at the end of the activity'''
* When does the triangle not form?

[[Category:Triangles]]
[[Category:Class 8]]
[[Category:Classroom activities]]