Polygon | class 8

If each interior angle of a regular polygon measures 140^(@) , how many side does the polygon have?

The number of diagonals of a convex polygon is 15 less than 4 times the number of its sides. The number of sides of the polygon be

The number of sides of two regular polygons are as 5: 4 and the difference between their angles is 9^@. Find the number of sides of the polygons

In a group of 40 students , 23 take the AP Psycholgy class , 18 take the AP Calculas class, and 8 take both classes . What is the probability that a student takes AP Psychology or AP Calculus ?

Write the negation of the following. Polygon ABCDE is a pentagon.

A frequency polygon is constructed by plotting frequency of the class interval and the (a) upper limit of the class (b) lower limit of the class (c) mid value of the class (d) any values of the class

For drawing a frequency polygon of a continuous frequency distribution, we plot the points whose ordinates are the frequencies of the respecitve classes and abscissae are, respectively

Fungi producing 8 spheres in a sac belong to the class

The interior angles of a regular polygon measure 150^@ each. The number of diagonals of the polygon is

The ratio of the area of a regular polygon of n sides inscribed in a circle to that of the polygon of same number of sides circumscribing the same is 3:4. Then the value of n is 6 (b) 4 (c) 8 (d) 12