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From Karnataka Open Educational Resources
Linear pair axiom : If a ray stands on a line, then the sum of two adjacent angles so formed is 180 degrees (view source)
Revision as of 13:13, 25 April 2019
, 13:13, 25 April 2019→Name of the activity
=== Objectives ===
=== Objectives ===
Introduce children to linear pair of angles
===Estimated Time===
===Estimated Time===
30 minutes
=== Prerequisites/Instructions, prior preparations, if any ===
=== Prerequisites/Instructions, prior preparations, if any ===
Prior knowledge of point, lines, angles
===Materials/ Resources needed===
===Materials/ Resources needed===
* Digital - Computer, geogebra application, projector.
* Non digital -worksheet and pencil.
* Geogebra files : “[https://ggbm.at/suvfaumm Linear pair axiom - ray on a line.ggb]”
{{Geogebra|suvfaumm}}
===Process (How to do the activity)===
===Process (How to do the activity)===
* Prior hands on activity
* Start with coinciding point C with the point B
* What is the angle formed by the line
* Move point C above and slowly rotate around point 0
* How many angles do you notice
* Name the angles formed : what are their measure
* Do the two angles together form a 180<sup>o</sup> angle
* Do the two angles form a linear pair
* Record the values of the two angles for various positions of point C
: {| class="wikitable"
|Sl No.
|∠BOA
|∠BOC
|∠COA
|∠BOC + ∠COA
|Dothe angles form a linear pair
|-
|.
|
|
|
|
|
|}
* '''Evaluation at the end of the activity'''
