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Calculators >>>
Figure out the number of sides, measure of each exterior angle, and the measure of the interior angle of any polygon. Simply enter one of the three pieces of information!
The sum of the measures of the angles of a convex polygon with n sides is (n - 2)180.
Add the below code to the <body> section of your page:
<script
language="javascript"
type="text/javascript">
function
side(form)
{
var
n =
document.form1.n.value;
document.form1.n.value
=
n;
document.form1.intx.value
=
((n
-
2)
*
180)
/
n;
document.form1.ext.value
=
180
-
document.form1.intx.value;
}
function
extn(form)
{
var
e =
document.form1.ext.value;
document.form1.n.value
=
360
/
e;
document.form1.intx.value
=
180
-
e;
}
function
intn(form)
{
var
i =
document.form1.intx.value;
document.form1.ext.value
=
180
-
i;
document.form1.n.value
=
360
/
(180
-
i);
}
</script>
The sum of the measures of the angles of
a convex polygon with <i>n</i>
sides is <b>(<i>n</i>
- 2)180.</b><br>
<br>
<form
name="form1">
<table
width="500"
border="1">
<tr>
<td
width="45%">
Sides on the polygon:</td>
<td><input
name="n"></td>
<td><input
type="button"
value="
Find "
onClick="side(this.form)"></td></tr>
<tr>
<td
width="35%">
Measure of each exterior angle:</td>
<td><input
name="ext"></td>
<td><input
type="button"
value="
Find "
onClick="extn(this.form)"></td></tr>
<tr>
<td
width="20%">
Measure of each interior angle:</td>
<td><input
name="intx"></td>
<td><input
type="button"
value="
Find "
onClick="intn(this.form)"></td></tr>
</table>
</form>
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