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Construction of a triangle with 3 sides (view source)
Revision as of 10:50, 15 April 2019
, 10:50, 15 April 2019Created page with "=== Objectives === * To construct a triangle for given 3 sides * To show formation of different types of triangles when sides are varied * To show changes in angles when sides..."
=== Objectives ===
* To construct a triangle for given 3 sides
* To show formation of different types of triangles when sides are varied
* To show changes in angles when sides are varied.
* To show possibility of formation of a triangle
===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/bddzkw6y Triangle construction (3sides)]”
===Process (How to do the activity)===
* 1. Use the geogebra file to demonstrate how to construct a triangle given 3 sides.
* 2. Students can be asked for a given any one side how many triangles are possible.
* 3. How will you draw the second side? Where will you fix the position of the second side?
* 4. How will you draw the third side? How can you fix the position third side?
* 5. For what measurement of sides the triangle is not possible.
* 6. Vary the sliders to observe the changes reflected in the triangle.
* 7. Make different types of triangles with respect to sides by changing the sliders.
* 8. Challenge them to make
** Isosceles right angled triangle,
** Equilateral triangle including right angle or obtuse angle
* 9. Note the measure of sides in the worksheet
'''Work sheet'''
{| class="wikitable"
|Side1
|Side2
|Side3
|Side1+ Side2 > Side 3
|Side2 + Side 3 > Side 1
|Side1+ Side3 > Side 2
|YourObservations
|-
|
|
|
|
|
|
|
|-
|
|
|
|
|
|
|
|}
'''Evaluation at the end of the activity'''
* Can you construct a triangle for any given sides?
* For given 3 sides how many triangles are possible?
<nowiki>**</nowiki>[http://www.robocompass.com/share?id=1iexrtm431kxd Actual construction (using robocompass)]
* To construct a triangle for given 3 sides
* To show formation of different types of triangles when sides are varied
* To show changes in angles when sides are varied.
* To show possibility of formation of a triangle
===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/bddzkw6y Triangle construction (3sides)]”
===Process (How to do the activity)===
* 1. Use the geogebra file to demonstrate how to construct a triangle given 3 sides.
* 2. Students can be asked for a given any one side how many triangles are possible.
* 3. How will you draw the second side? Where will you fix the position of the second side?
* 4. How will you draw the third side? How can you fix the position third side?
* 5. For what measurement of sides the triangle is not possible.
* 6. Vary the sliders to observe the changes reflected in the triangle.
* 7. Make different types of triangles with respect to sides by changing the sliders.
* 8. Challenge them to make
** Isosceles right angled triangle,
** Equilateral triangle including right angle or obtuse angle
* 9. Note the measure of sides in the worksheet
'''Work sheet'''
{| class="wikitable"
|Side1
|Side2
|Side3
|Side1+ Side2 > Side 3
|Side2 + Side 3 > Side 1
|Side1+ Side3 > Side 2
|YourObservations
|-
|
|
|
|
|
|
|
|-
|
|
|
|
|
|
|
|}
'''Evaluation at the end of the activity'''
* Can you construct a triangle for any given sides?
* For given 3 sides how many triangles are possible?
<nowiki>**</nowiki>[http://www.robocompass.com/share?id=1iexrtm431kxd Actual construction (using robocompass)]