Consider the octagon. An octagon.

Octagons are eight-sided polygons.

Imagine drawing the diagonals from one vertex to all of the non-adjacent vertices.

How many triangles are necessary to construct an octagon?

triangles
The formula for finding the sum of the interior angle measures of any polygon is (n – 2)(180°).

The sum of the interior angle measures of an octagon is
°.

3. this unit has taught us that documentary photography produces a historical record of an event, place, or person. wilkes shares his photographing of the historical regata event and the obama inauguration. do you feel that these are good examples of documentary photography? would you consider wilkes to be a documentary photographer? 4. wilkes continues to discuss the concept of time and how it relates to the type of photography he does. why do you feel that the concept of time is of such importance to him as a photographer? 5. unit 10 explores photographs with movement in them such as wildlife and documentary photography. wilkes takes the idea of movement in photography to a different level. do you feel the tips and information that you have learned in unit 10 is applicable to the type of photography that wilkes does?

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