(35*(35-3))/2 (35*32)/2 1120/2 560 diagonals
The number of diagonals is n(n-1)/2 - n substitute n=35 35(34)/2 - 35 = 560
triangle
There are 275 diagonals in a shape with 25 sides. The formula is n*(n-3)/2
The diagonals of a rectangle do not cross at right angles
35 diagonals
It has 0.5*(35^2 -3*35) = 560 diagonals
There are 35 diagonals in a 10 sided decagon
(35*(35-3))/2 (35*32)/2 1120/2 560 diagonals
It has 35 diagonals
Any quadrilateral (4-sided shape) has 2 diagonals.
The number of diagonals is n(n-1)/2 - n substitute n=35 35(34)/2 - 35 = 560
There are 54 diagonals in a 12 sided shape
35.
35
35
There is none. A 5 sided shape is a pentagon but that has 10 diagonals, not 2.