Felipe set his hinged mirror so that its angle was 36° and the core region was isosceles, as shown at right. Homework Help ✎
How many sides did his resulting polygon have? Show how you know.
What is another name for this polygon?
How many times does 36° go into 360°?
Since 360° ÷ 36° = 10, his regular polygon will have 10 sides.
See the Math Notes box in Lesson 7.1.4.