Linear pair axiom : If the sum of two adjacent angles is 180 degrees, then the non-common arms of the angles form a line

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Objectives

To understand if two adjacent angles form 180o angle then the non-common arms of the angles form a line

Estimated Time

30 minutes

Prerequisites/Instructions, prior preparations, if any

Prior knowledge of point, lines, angles

Materials/ Resources needed


Download this geogebra file from this link.


Process (How to do the activity)

  1. Give inputs for the two angles – Angle 1 and Angle 2.
  2. What is the sum of the two angles?
  3. When do the non-common arm form a line?
  4. Record the value of Angle 1 , Angle 2.
Sl No. Angle 1 Angle 2 Angle 1 + Angle 2 Do the non-common arms form a line
.
  • Evaluation at the end of the activity