Answer:
8 sides
Step-by-step explanation:
exterior angle + interior angle = 180° , that is
exterior angle + 135° = 180° ( subtract 135° from both sides )
exterior angle = 45°
the sum of the exterior angles of a polygon = 360°
since the polygon is regular then number of sides n is
n = 360° ÷ 45÷ = 8
