Difference between revisions of "Construction of a triangle with side, angle and sum of other two sides"

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(Created page with "===Name of the activity=== Brief blurb describing what the activity. If this has been borrowed from some external web site (for example, a non OER or OER site which had this...")
 
 
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===Name of the activity===
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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.
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Brief blurb describing what the activity. If this has been borrowed from some external web site (for example, a non OER or OER site which had this idea and based on which the activity was developed)
 
  
 
=== Objectives ===
 
=== Objectives ===
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Content objectives  - what content areas
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To construct a triangle with side, angle and sum of other two sides
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Skill objectives - what specific skills
 
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Classroom objectives - to demo peer learning, to make a classroom resource, etc -
 
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All these kinds of objectives need not be there for every activity.  And no need to list them as different headings.  This is only for our reference when we are developing activities.
 
  
 
===Estimated Time===
 
===Estimated Time===
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30 minutes
  
 
=== Prerequisites/Instructions, prior preparations, if any ===
 
=== Prerequisites/Instructions, prior preparations, if any ===
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Prior understanding of point, lines and angles, elements of triangle, properties of triangle
  
 
===Materials/ Resources needed===
 
===Materials/ Resources needed===
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* Digital : Computer, geogebra application, projector.
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* Non digital : Worksheet and pencil
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* Geogebra files :  “[https://ggbm.at/yysjtkj4 Triangle Construction(1side-1angle-sum of other 2 sides)]”
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{{Geogebra|yysjtkj4}}
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===Process (How to do the activity)===
 
===Process (How to do the activity)===
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How to do the different steps of the activity?
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* Use the slider to set the base and the given angle
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* The difference of the other two sides is marked using the slider
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What kinds of questions you can ask for that activity
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* Follow the steps for construction – step1, step2
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* Students can vary the sliders to observe the changes reflected in the triangle.
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What are the student follow-up activities/ questions you can give?
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'''Evaluation at the end of the activity'''
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* When does the triangle not form?
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Categories:  (Subject) (Topic) (Sub-concept/topic) (Class 6) (Resource format)
 
  
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Example -  (Mathematics) (Triangle) (Area) (Perimeter) (Class 6) (Class 8) (Geogebra) (Video)
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[[Category:Triangles]]
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[[Category:Class 8]]
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[[Category:Classroom activities]]

Latest revision as of 10:40, 26 April 2019

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


Download this geogebra file from this link.


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?
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