Polygons

• A polygon is a closed figure consisting of three or more sides.
• The sides are lines which meet at verticies.
• In a regular polygon, all the sides are the same length and all the angles are the same.
• They give a list of names for various sided polygons.
• The sum of the angles of a triangle is 180°
• Do this figure, l₁ is parallel to l₂
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• The sum of the measures of the interior angles of an n-sided polygon is (n-2)180°

Homework