CHapter 11 Vocabulary
Perimeter - the distance around a shape. **Think of perimeter as the fence around a yard, or the outside wall of your house.
Area - the measure of the number of unit squares needed to cover a flat surface. ** Think of area as the grass in your yard or the floor inside your home. Area is the "stuff" inside the shape.
The area of this shape is 8 sq. un.
To find the are simply count each square unit on the inside of the shape. There are 8 square tiles. OR Use a multiplication equation to solve. a = 2 x 4 a = 8 |
Unit square - a square with a side length of 1 unit
Square unit (sq. un.) - a unit used to measure area such as square foot, square meter, and so on. **Just add the word "square" to whichever unit you are using to measure.
Centimeter (cm) - a metric unit for measuring length or distance
Meter (m) - a metric unit for measuring length or distance
Length - the measurement of the distance between two points
Distributive Property - the property that states that multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products. ** Using the distributive property is quicker than counting each individual square inside the shape. Also, some of the shapes we will look at will not have squares to count, BUT will have the lengths for us to multiply.
Centimeter (cm) - a metric unit for measuring length or distance
Meter (m) - a metric unit for measuring length or distance
Length - the measurement of the distance between two points
Distributive Property - the property that states that multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products. ** Using the distributive property is quicker than counting each individual square inside the shape. Also, some of the shapes we will look at will not have squares to count, BUT will have the lengths for us to multiply.
This model shows how a rectangle with the side lengths of 14 and 8 can be broken up into smaller equations. It is easier to find the area of this shape if the 14 is broken into 10 + 4. You have now created 2 new equations: 8 x 10 & 8 x 4.
Solve- 8 x 10 = 80 & 8 x 4 = 32 80 + 32 = 112 So, the area of this rectangle is 112 sq.un. |
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