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January 28, 2015

January 28, 2015

Posted by **HELP!!! URGENT** on Friday, December 2, 2011 at 2:40am.

- Geometry -
**drwls**, Friday, December 2, 2011 at 2:54amThe internal angle each corner of a regular polygon is 180 - 360/n degrees.

Let N be the number of sides of polygon with fewer sides. The other polygon then has 5N/4 sides.

180 - 360/N - [180 - 360*0.8/N] = -9

-360/N + 288/N = -9

72/N = 9

N = 8

The other polygon has 10 sides.

The internal angles are 135 and 144 degrees.

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