A heptagon has 7 sides.
The sum of exterior angles is 360.
The six given angles have exterior angles equal to:
60,30,45,10,90 and 55 for a total of 290.
The remaining exterior angle is therefore 360-290=70°.
The largest exterior angle is 90°.
The measures of 6 of the interior angles of a heptagon are: 120°, 150°, 135°, 170°, 90°, and 125°. What is the measure of the largest exterior angle?
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