Respuesta :

osikbro
You know that there are 135 degrees in angle BCD (because all regular octagons have 135 degrees in all of their angles). Subtracting 135 from 180 degrees in a line gives you 180-135=C, 45 degrees. Hope this helps!
johnhrbek
Find the measurement of Q, C, and D. 
It looks like D, C, and Q is equal to 45°