What is the number of sides of a regular polygon whose each exterior angle is 45? Geometry 1 Answer Mark D. Apr 26, 2018 8 Explanation: #360/n =# exterior angle for a regular polygon, where #n# is the number of sides. So if we substitute the given angle in #=># #360/n=45# so #360/45=n# so #n=8# Answer link Related questions How do I determine the molecular shape of a molecule? What is the lewis structure for co2? What is the lewis structure for hcn? How is vsepr used to classify molecules? What are the units used for the ideal gas law? How does Charle's law relate to breathing? What is the ideal gas law constant? How do you calculate the ideal gas law constant? How do you find density in the ideal gas law? Does ideal gas law apply to liquids? Impact of this question 6077 views around the world You can reuse this answer Creative Commons License