Question
If ratio of interior & exterior angle of a regular
polygon is 4:5, then number of sides of the polygon isSolution
We know that I + E = 180 & I :E = 4:5 Let I = 4k & E = 5k So 4k + 5k = 180 or 9k =180 or k = 20 ; It means exterior angle = 20 = 360/N or N = 360/20 = 18
More Mensuration Questions
The science of colours.
Find out the appropriate word.
DISPENSE
Find the word with the appropriate similar meaning of the word in Italic from the options given:
 His profound insights impressed the audience...
Malicious
SERENE
An ornament fastened to clothing with a hinged pin
A) dismal          B) Appellant       C) Plaintiff      D) Vile
...Choose the word opposite in meaning to the given word.
Liberate
Select the option that can be used as a one-word substitute for the given group of words.
One who is not concerned with right or wrong
