Question

Find the missing angle of an octagon if the others are 125, 132, 148, 124, 122, 106 and 100 degrees

Answer 1

223 degrees

To find the missing angle, you first have to add up all the numbers you know. So 125, 132, 148, 124, 122, 106 and 100 degrees add up to 857 degrees.

We know that the total degrees of an octagon is 1080 degrees, so to find the last number, we would simply do 1080 minus 857 which is 223 degrees.

Hope this helps!

Answer 2

The sum of all interior angles of an octagon is $1080^\circ$

$1080-125-132-148-124-122-106-100=223$

The missing angle measures $223^\circ$