Q: How the find the value of x in a polygon?

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First find the number of sides of the polygon and let it be x: Rearrange the diagonal formula: 0.5*(x2-3x) = 135 into a quadratic equation Which is: x2-3x-270 = 0 and solving the equation gives x positive value of 18 Therefore the polygon has 18 sides Sum of interior angles: (18-2)*180 = 2880 degrees Each interior angle: 2880/18 = 160 degrees

There are 5 sides (a pentagon). The perimeter is the length of one side times the number of sides. x * 2.5 = 12.5 and x is 5

42

No, because 'x' is a variable.

.75/x=.33

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Well that totally depends on the polygon, if it's a hexagon, triangle, square, the answers are different

It depends very much on what x is. Whether it is a side or a diagonal or a radius of a circumscribing circle or circumscribed incircle, an apothem, an interior or exterior angle or some other measure. It also depends on the number of sides that the polygon has.

Sum of interior angles of a x-gon = (x-2)*180 = 3600 so x-2 = 20 and hence x = 22. GOOD! becus that's what i got! :P

To find the number of degrees in ANY polygon, you can use this formula: (x-2)180 x is the number of sides in your polygon EXAMPLE: A Hexagon: (6 sides-2)180= 720o I hope this helps :D

18

First find the number of sides of the polygon and let it be x: Rearrange the diagonal formula: 0.5*(x2-3x) = 135 into a quadratic equation Which is: x2-3x-270 = 0 and solving the equation gives x positive value of 18 Therefore the polygon has 18 sides Sum of interior angles: (18-2)*180 = 2880 degrees Each interior angle: 2880/18 = 160 degrees

There are 5 sides (a pentagon). The perimeter is the length of one side times the number of sides. x * 2.5 = 12.5 and x is 5

no

180-x...... hahaahahaaa

The formula to find the value of X would be Y-2X. This would equal to y-9 times 2 X.

42

No, because 'x' is a variable.