When working with geometry always draw the figure, putting in the measurements. This habit helps when going over the homework without the book or checking for errors.

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Always write the formula

(abbreviations are okay).

Plug in the numbers.

Solve - being sure to add the measurement.

Basic Formula

Perimeter = side 1 + side 2 + side 3 . . . .

P = s 1 + s 2 + s 3 + s 4

Memorize the formula