Find the sum of the measures of the angles of a seven-sided polygon.
Final Answer: The sum of the measures of the angles of a seven-sided polygon is \(\boxed{900}\).
Step 1 :Let's find the sum of the measures of the angles of a seven-sided polygon.
Step 2 :The sum of the interior angles of a polygon can be calculated using the formula \((n-2)*180\), where n is the number of sides of the polygon.
Step 3 :In this case, n is 7.
Step 4 :Substitute n = 7 into the formula, we get \((7-2)*180 = 900\).
Step 5 :Final Answer: The sum of the measures of the angles of a seven-sided polygon is \(\boxed{900}\).