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+ Introduction to Shapes Squares and Rectangles. + Do Now: Chalk Talk.

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Presentation on theme: "+ Introduction to Shapes Squares and Rectangles. + Do Now: Chalk Talk."— Presentation transcript:

1 + Introduction to Shapes Squares and Rectangles

2 + Do Now: Chalk Talk

3 + Polygon A polygon is regular when all angles are equal and all sides are equal Example: square, equilateral triangle, pentagon, hexagon, heptagon, octagon

4 + Quadrilateral A flat shape with four straight sides Examples: Squares, Rectangles, Rhombus, Trapezoid, Parallelogram

5 + Square A 4-sided flat shape with straight sides where: all sides have equal length, and every interior angle is a right angle (90°) It is a Quadrilateral and a Regular Polygon

6 + Perimeter The distance around a two-dimensional shape. Perimeter Example: the perimeter of this rectangle is 3+7+3+7 = 20

7 + Perimeter of a Square P=S+S+S+S or P=4s Perimeter is measured in units

8 + Find the Perimeter

9 + Rectangle A 4-sided flat shape with straight sides where all interior angles are right angles (90°). Also opposite sides are parallel and of equal length.

10 + Perimeter of a Rectangle P=S+S+S+S or P= 2(Length)+2(Width) Perimeter is measured in units

11 + Find the Perimeter

12 + Practice Work on the following hand out!

13 + Area The size of a surface. The amount of space inside the boundary of a flat (2- dimensional) object

14 + Area of a Square and Rectangles A= Length x Width Units squared

15 + What is the Area?

16 + Practice! Work on the following hand-out!

17 + Before You Go! Define Area Define Perimeter Draw a Square or Rectangle and find the perimeter and area of your shape


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