Answer:
Multiply 180 degrees by (n minus 2)
Step-by-step explanation:
Number of sides in the polygon = n
Polygons have sides 3, 4, 5, 6.....
Polygon with 3 sides is a triangle
Polygon with 4 sides is a quadrilateral
Sum of it's Interior angles = (n-2) × 180°
For a 3 sided polygon
Sum of it's Interior angles = (n-2) × 180°
= (3 - 2) × 180°
= 1 × 180°
= 180°
For a 4 sided polygon
Sum of it's Interior angles = (n-2) × 180°
= (4 - 2) × 180°
= 2 × 180°
= 360°
