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→Angle sum property
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==concept map==
==Concept map==
{{#drawio:mmPolygons|interactive}}
== Textbook ==
== Textbook ==
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A polygon has 'n' sides .Two of it's angles are right angles and each of remaining angle isFind the value of 'n'.
A polygon has 'n' sides .Two of it's angles are right angles and each of remaining angle isFind the value of 'n'.
Step 1;(Students must understand the problem)
Step 1;(Students must understand the problem)
In a polygon of side 'n' two angles are and other angles are each.We must find out value of 'n'.
In a polygon of side 'n' two angles are and other angles are each. We must find out value of 'n'.
Step 2(Students know the formula for sum of angles of polygon of side 'n')
Step 2(Students know the formula for sum of angles of polygon of side 'n')
(2n-4)right angles.
(2n-4)right angles.