chinny2002 chinny2002

11-12-2017
Mathematics

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A 2-inch-wide frame is to be built around the regular decagonal window. At what angles a and b should the corners of each piece be cut?

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Аноним Аноним

11-12-2017

External angles add up to 360
so each external angle = 360/10 = 36 degrees
internal angle = 180 - 36 = 144 degrees

answer is 144 degrees

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