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→Concept #2. Properties of polygons
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*Question Corner
*Question Corner
−==Concept #2. Properties of polygons==
+==Concept #2. Properties and measurements of polygons==
===Learning objectives===
===Learning objectives===
# The sum of the interior angle measures of an n-sided, convex polygon is <math>(n-2).180</math>
# The sum of the interior angle measures of an n-sided, convex polygon is <math>(n-2).180</math>
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# Each exterior angle must be <math>360/n</math>
# Each exterior angle must be <math>360/n</math>
# Each of the exterior angle and interior angles are measured from the same line. hence they add upto 180 degrees.
# Each of the exterior angle and interior angles are measured from the same line. hence they add upto 180 degrees.
+# Area of Polygon = perimeter × apothem / 2 [[File:Apothem.jpeg|100px]]
+