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(MATHS)
Polygon:
Polygon is a closed plane figure bounded by three or more straight line
segments e.g. triangle (3 lines) Quadrilateral (4 lines) etc.
Regular polygon is a polygon having all equal sides and interior and
exterior angles are equal too.
1. Each Exterior angle of regular polygon of ‘n’ sides =
𝟑𝟔𝟎𝟎
𝒏
2. Each interior angle of regular polygon of ‘n’ sides = 1800-exterior
𝒏−𝟐
angle or 𝒏 × 𝟏𝟖𝟎𝟎
3. Sum of all Exterior angles of polygon = 3600.
Ex. 1: Find each interior angle of a regular pentagon.
n = 5 ∴ 𝐄𝐚𝐜𝐡 𝐢𝐧𝐭𝐞𝐫𝐢𝐨𝐫 𝐚𝐧𝐠𝐥𝐞 =
Date of Release – 22-April-16
SUBJECT- MATHS
𝟓−𝟐
𝟓
× 𝟏𝟖𝟎𝟎 = 𝟏𝟎𝟖𝟎
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