Question 1118573
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The question can't be answered.  Given the interior angle sum, we know the number of sides of the polygon, and therefore the number of angles -- but we know nothing about how many of them are right angles.<br>
So I will guess that the question was to find the number of angles, not the number of right angles.<br>
I think the easiest way to get from the interior angle sum to the number of sides/angles is to add the 360 degree sum of the exterior angles; then, since the sum of each interior and corresponding exterior angle is 180 degrees, divide the resulting total by 180:<br>
{{{1440+360 = 1800}}}
{{{1800/180 = 10}}}<br>
The polygon has 10 sides and 10 angles.