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Mathematics 14 Online
OpenStudy (anonymous):

1. 6 angles of a heptagon measure 115°, 98°, 124°, 138°, 142°, 159°, find the measure of the seventh angle. 2. Find the measure of each exterior angle of a regular 18-gon. 3. If the measure of each exterior angle of a regular polygon is 18°, determine how many sides the polygon has.

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