Wednesday

April 1, 2015

April 1, 2015

Posted by **Emily** on Tuesday, March 27, 2007 at 8:46am.

180(x-2)=135 [Interior Angle Sum Theorem]

x-2=.75

x=2.75

That can't be right though. Help?

Not sure about your formula.

Number of sides = 360/(180-interior angle)

so

Number of sides = 360/(180-135)

= 360/45

= 8

180(x-2) gives you the SUM of the interior angles, so each angle would be 180(x-2)/x

your equation would be

180(x-2)/x = 135

Sove it, you will get the answer DrRuss got.

- math -
**Anonymous**, Saturday, March 7, 2015 at 1:30am180°-360°/n=108°

**Answer this Question**

**Related Questions**

math--fast help please - Find the interior and exterior angle measurements of a ...

Geometry - In a regular polygon (equal sides and angles), you use (n-2)180 to ...

Math - 1. The measure of an interior angle of a regular polygon is 20 more than ...

geometry - If the ratio of the interior angle to the exterior angle is 5:1 for a...

7th grade math Ms. Sue please - 2. Find the sum of the interior angles of a ...

math. - Each exterior angle of a regular polygon is 15 degrees. 1.Determine the ...

Algebra 2 - The formula A = 180(n-2)/n relates to the measure A of an interior ...

Geometry - 1. How many sides does a regular polygon have if one exterior angle ...

Math - Are the statements Always, Sometimes or Never. Please explain why. Thanks...

please help!!!!! someone - Each exterior angle of a regular polygon is 15 ...