Find the sum of the number of diagonals drawn from one vertex of a polygon of 13 sides and the number of diagonals drawn from the adjacent vertex of that vertex of the same polygon.
the answer should be 20 as from each vertex there should be n-3 or 10 diagonals so from 2 vertices there should be 20 diagonals
Fill in the blanks.
(i) The perimeter of circle and its diameter vary __P__ with each other.
(ii) If two quantities p and q vary inversely with each other then __Q__ of their corresponding values remain constant.
(iii) When x and y are in indirect proportion and if y doubles then x becomes __R__
A and c , b and d are same.
The length of a rectangular plot is twice its width. If the length of its diagonal is metres, the perimeter of the rectangle is