Discovering Discovering Parallelograms Parallelograms
Discovering Discovering Parallelograms Parallelograms
Discovering Discovering Parallelograms Parallelograms
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Hexagon – 6 sides<br />
# of triangles:<br />
sum:<br />
Heptagon – 7 sides<br />
# of triangles:<br />
sum:<br />
Octagon – 8 sides<br />
# of triangles:<br />
sum:<br />
“n-gon”:<br />
If n = # of sides, then how many triangles are formed? ___________<br />
An expression (using “n”) for the interior angle sum is:<br />
8