Geomtery 7.1-7.4

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MillicentBeard  on November 14, 2011

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Geomtery 7.1-7.4

 sum of measures of triangle180
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Definitions

sum of measures of triangle 180
angle that is adjacent to and supplementary to an interior angle exterior angle
The measure of an exterior angle of a triangle equals sum of remote interior angles
a segment joing the midpoints of 2 sides of a triangle is parallel to the ________ and equals ____ of third side third side, 1/2
If 2 angles are congruent to two angles of a second triangle, the third angles are congruent no-choice theorem
Two angles and a side of a triangle are congruent then triangles are congruent AAS
Triangle 3 sides
pentagon 5 sides
hexagon 6 sides
heptagon 7 sides
octagon 8 sides
nonagon 9 sides
decagon 10 sides
dodecagon 12 sides
n-gon n sides
measure of exterior angles of a polygon is 360
# of diagonals that can be drawn in a polygon of n sides d= [n(n-3)]/2
sum of measures of int angles in a polygon with n sides S= (n-2)180
a polygon that is both equilateral and equiangular regular polygon
each ext angle of and equiangular polygon E=360/n

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