Question

No of side of regular polygon whose i exterior angle is 45°

Answer 1

$total \: measure \: of \: all \: exterior \: angle = {360}^{0} \\ measure \: o \: each \: exterior \: angle = {45}^{0} \\ no. \: of \: exterior \: angles = \frac{360}{45} = 8 \\ the \: polygon \: hs \: 8 \: sides$