sum of interior angles of a regular polygon
Check the final answer first, then review the worked steps.
Problem
sum of interior angles of a regular polygon
Step-by-step solution
The number of sides $n = 360^\circ / 90^\circ = 4$. The sum of interior angles is $(n-2) \times 180^\circ = (4-2) \times 180^\circ = 360^\circ$.
Answer
360^\circ