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Remove all other thoughts from your mind. Pay close attention. Try all the examples. Ignore all other distractions.
copyright©amberpasillas2010 Polygon: Any straight-sided closed plane figure.
copyright©amberpasillas2010 Polygons come in all shapes and sizes.
Name # of sides Picture 3 Triangle 4 Quadrilateral 5 Pentagon 6 Hexagon 8Octagon 10Decagon
copyright©amberpasillas2010 Name The Quadrilateral parallelogram rectanglerhombus square trapezoid 1)2) 3) 4)5)
copyright©amberpasillas2010 Name The Quadrilateral The sum of all the angles equals 360º degrees in a quadrilateral. 90º
copyright©amberpasillas2010 Today we are going to find the Area of the Polygons Rectangles & Squares.
How many squares cover this rectangle? height base (h) (b) The area of this rectangle is 12 squares or 12 units squared. Area is the number of square units that are needed to cover the surface of a figure.
copyright©amberpasillas2010 2 units x 6 = 12 units 2. 2 units 6 units Label the dimensions of this rectangle. Area is in units 2 because you are multiplying units.
copyright©amberpasillas2010 2 units 6 units We found the area of the rectangle by multiplying the base times the height. A = bh The area of a rectangle is also known as the length times the width. A = bh is the same as A = lw
copyright©amberpasillas2010 What is the area of the rectangle ? 5 ft. 6 ft. 5 6 x 30ft. 2 30 ft 2 or square feet
copyright©amberpasillas2010 PERIMETER: Is the distance around a figure. in + + + = AREA: Is the square units that cover a figure. length width = in in = in 2 VOLUME: The number of cubic units inside a figure. length width height in in in = in 3 length width length width height squared cubed
copyright©amberpasillas2010 What is the area of the rectangle ? 2 in. 5 in. 2 5 x 10in. 2 10 in 2 or square inches
copyright©amberpasillas2010 A square is a special rectangle. Since the base and the height are the same size, we call them sides ( s ) instead of base and height. s height = s s base = s A= s 2
copyright©amberpasillas2010 What is the area of the square ? 4 m. 4 4 x 16m. 2 16 m 2 or square meters
copyright©amberpasillas2010 What is the area of the square ? 5 in. 5 5 x 25in. 2 25 in 2 or square inches
copyright©amberpasillas2010 The End! Take out your study guide!
copyright©amberpasillas2010 The Area of a figure is the number of square units needed to cover it. A = 2 3 6 square units 6 units 2 2 3 Rectangle 4 5 8m Square #1
copyright©amberpasillas2010 #2 PERIMETER: Is the distance around a figure. in + + + = AREA: Is the square units that cover a figure. length width = in in = in 2 VOLUME: The number of cubic units inside a figure. length width height in in in = in 3 length width length width height squared cubed
Area of a Parallelogram
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Copyright©amberpasillas2010. Perimeter – (P) (P) The distance around a figure. 10 ft. 6 ft ft.
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