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10. What is the size of the angle at each vertex of the regular 9- pointed star? (Hint: an interior angle of a regular nonagon is 140°)

10. What is the size of the angle at each vertex of the regular 9- pointed star? (Hint: an interior angle of a regular nonagon is 140°)

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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10. What is the size of the angle at each vertex of the regular 9- pointed star? (Hint: an interior angle of a regular nonagon is 140°)
Transcribed Image Text:10. What is the size of the angle at each vertex of the regular 9- pointed star? (Hint: an interior angle of a regular nonagon is 140°)
H The diagram shows a complex pentagon. However, although it's complex, it is symmetrical (all its sides and angles are equal). It is known as a Pentagram or a 5-pointed star. What is the size of the angle at each of the points A, C, E, G and I?
Transcribed Image Text:H The diagram shows a complex pentagon. However, although it's complex, it is symmetrical (all its sides and angles are equal). It is known as a Pentagram or a 5-pointed star. What is the size of the angle at each of the points A, C, E, G and I?
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