Area and Perimeter 6th grade math.

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Presentation transcript:

Area and Perimeter 6th grade math

Perimeter: the distance around a figure What is Perimeter?

How Do You Find Perimeter? To find the perimeter of a figure, whether it is a regular shape (rectangle, triangle, square, parallelogram, trapezoid, etc.) or an irregular shape, you add all of the side lengths together How Do You Find Perimeter?

Area: the number of unit squares that can be contained or placed in a 2D shape Usually expressed as square feet, square inches, etc. What is Area?

To find the area of a square, the formula is: A = s2 OR A = (s)(s)

To find the area of a rectangle, the formula is A = bh ”b” means base, or the side/edge that the shape sits on ”h” means height, or the distance from the bottom to the top of the shape Area of a Rectangle h b

To find the area of a triangle, the formula is A = ½bh OR A = 𝑏ℎ 2 The area of a triangle is half the area of a rectangle or square To find the area of a triangle, the formula is A = ½bh OR A = 𝑏ℎ 2 Area of a Triangle

Area of a Parallelogram To find the area of a parallelogram, we use the same formula that is used for a rectangle, but we have a different way of identifying the height Area of a Parallelogram

If you’ve ever seen the Pizza Hut sign, then you’ve seen a trapezoid, but they don’t always look that way To find the area of a trapezoid, we follow this formula A = ½ (b1+b2) h Area of a Trapezoid

NOW FOR SOME PRACTICE!!

Must be completed by: 04/18/17 – Tuesday Homework: STAAR Review Sheet Must be completed by: 04/18/17 – Tuesday *You will have homework over area next class*