| The perimeter of a parallelogram: | |
 | To find the perimeter of a parallelogram, just add up all the lengths of the sides: Perimeter = a + b + a + b = 2a + 2b |
| The area of a parallelogram: | |
 | To find the area of a parallelogram, just multiply the base length (b) times the height (h): Area = b x h |
| Yeah, that's the formula... But let's check out where it comes from! | |
Let's cut off a piece and move it...  | Now, it's a rectangle! Area = length x width = b x h  |
| The sides and angles of a parallelogram: |
 Opposite sides of a parallelogram are the same length (congruent). Opposite angles of a parallelogram are the same size/measure (congruent.) Opposite sides of a parallelogram are parallel... Uh... You think that's where it got it's name? |
| Other properties of the angles of a parallelogram: | |
 | Adjacent sides (ones next to each other) of a parallelogram are supplementary. This means that their measures add up to 180 degrees. |
Written by Mahendra Almazzzzzz
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