Show that the interior angle of a regular octagon is 135°

Each corner of an octagon is 135

Use a protractor to help

NOTE: The sum of the interior angles of a regular octagon = (2n-4)*right angles or (n-2)*straight angles or (8–2)*180 =6*180 = 1080. So each interior angle of the regular octagon = 1080/8 = 135 deg.

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first the equation needs to be simplified. so the equation would now look like:   52-24+11

then you multiply.

and when you multiply, you will get the answer of 39.