POLYGOPOLYGONSNS

Interior & ExteriorInterior & ExteriorAnglesAngles

of Irregular of Irregular PolygonsPolygons

Sum of the Interior Sum of the Interior Angles of a PolygonAngles of a Polygon

180(n-2)

Individual Interior Individual Interior Angle of a Angle of a RegularRegular

PolygonPolygon

n180(n-2)

Sum of the ExteriorSum of the ExteriorAngles of a PolygonAngles of a Polygon

360°

Individual Exterior Individual Exterior Angle of a Angle of a RegularRegular

PolygonPolygon

n360°

Find the measure of each interior angle.

A pentagon has two right angles and two congruent angles, and

one angle measuring 80 degrees. Find the measures of all of its

interior angles.

Find the measure of each exterior angle.

Find the measure of y.

A heptagon has exterior angles with the measures of 9x, 2x, 7x,

4x, 5x, 6x, 3x. Find the measure of each interior angle.

pg. 386(2-13, 16-26, 29-31)

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