We
discussed the various ways that we can find the
area of various figures. We learned some
formulas for basic figures.
The big idea I hope you took from this lesson
was that the area of a figure can be found by
adding the areas of its parts. If we compose
(put together) a new figure from smaller pieces
without overlapping them, then the sum of the
areas of the pieces is the area of the new
figure. Likewise, if we decompose (cut or break
apart) a given figure into pieces, then the area
of the given figure is the sum of the areas of
the pieces. Even if we rearrange the pieces, the
overall area does not change. |
 
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