CBSE Class 8 Answered
The exterior angle of regular polygon is 1/3 of its interior angle.find the number of side of polygon ??
Ans -8 sides
Asked by Mohdayaz9921 | 30 Dec, 2018, 06:48: AM
Expert Answer
sum of interior and exterior angles = 180°
since the ratio is 1:3, let exterior angle be x and interior angle be 3x.
then x+3x = 4x = 180 or x = 45
hence interior angle = 135°
if n is number of sides of regular polygon, interior angle θ is given by : 
......................(1)
......................(1)hence sunstituting θ = 135 in eqn.(1), and solving for n, we get n = 8
hence number of sides of regular polygon is 8
Answered by Thiyagarajan K | 30 Dec, 2018, 08:42: AM
Application Videos
-
Solving Linear Equations in one variable
This video explains the method of finding the solutions of given linear equ... -
Linear Equations to Simpler Form
This video explince the concept of Linear Equations to Simpler Form. -
Equations Reducible to the Linear Form
This video explains the concept of Equations Reducible to the Linear Form. -
Sum of the Measures of the Exterior Angles of a Polygon ...
This video explains the method of finding number of sides of a polygon if t... -
Grouped Frequency Distribution Table
This video explains the method of constructing the Grouped Frequency Distri...
Concept Videos
-
Construction of Rhombus
Construction of rhombus given side and angle, both diagonals -
Construction of squares and rectangles
construction of square given side and diagonals,construction of rectangles -
Quadrilaterals
Definition, elements, angle sum property, classification of quadrilaterals -
Surface Area: Cubes and Cuboids
cubes and cuboids, finding their surface area -
Bar Graphs and Histograms
bar graph, histogram their interpretation,comparison of the two
CBSE 8 - Maths
Asked by cherrynittu2830 | 13 May, 2024, 12:44: PM
ANSWERED BY EXPERTCBSE 8 - Maths
Asked by gpt.pooja | 11 May, 2024, 08:30: PM
ANSWERED BY EXPERTCBSE 8 - Maths
Asked by biswajitpatel88 | 10 May, 2024, 01:54: PM
ANSWERED BY EXPERTCBSE 8 - Maths
Asked by biswajitpatel88 | 10 May, 2024, 10:49: AM
ANSWERED BY EXPERTCBSE 8 - Maths
Asked by biswajitpatel88 | 10 May, 2024, 10:49: AM
ANSWERED BY EXPERTCBSE 8 - Maths
Asked by seemachaubey1987 | 05 May, 2024, 09:41: AM
ANSWERED BY EXPERTCBSE 8 - Maths
Asked by ptech3383 | 04 May, 2024, 06:10: PM
ANSWERED BY EXPERTCBSE 8 - Maths
Asked by sarkarchaitali4001 | 02 May, 2024, 04:11: PM
ANSWERED BY EXPERTCBSE 8 - Maths
Asked by jaiswal445512 | 01 May, 2024, 05:42: AM
ANSWERED BY EXPERTCBSE 8 - Maths
Asked by jigmetyangchen13 | 28 Apr, 2024, 02:33: PM
ANSWERED BY EXPERT
