"Calculation of Area of Trapezoid" Area of Polygon PPT Courseware

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Jiangsu Education Edition Fifth Grade Mathematics Volume 1	pptx	6 MB

"Calculation of Area of Trapezoid" Area of Polygon PPT Courseware

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Upload Time: 2024-11-18

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"Calculation of Area of Trapezoid" Area of Polygon PPT Courseware

1. What are the formulas for the areas of parallelograms and triangles?

Area of parallelogram = base × height

S=ah

Area of triangle = base × height ÷ 2

S=ah÷2

It can be seen through experiments that two identical trapezoids can be combined into one ( ).

The base of the parallelogram is equal to the sum of ( ) and ( ) of the trapezoid;

The height of the parallelogram is equal to the height of the trapezoid ( ).

Think about it and fill it out.

Use two identical trapezoids to form a parallelogram.

If the area of the trapezoid is 12 square centimeters,

The area of the parallelogram is ( ) square centimeters.

If the area of the parallelogram is 24 square centimeters,

The area of the colored trapezoid is ( ).

Two different trapezoids must not be combined to form a parallelogram.

True or False

(1) Two trapezoids can be combined into a parallelogram. ( )

(2) Two trapezoids with the same shape can definitely form a parallelogram. ( )

(3) Two identical trapezoids can definitely form a parallelogram. ( )

(4) The area of a parallelogram is twice the area of a trapezoid. ( )

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For more information about the "Area of Polygons and Calculation of the Area of Trapezoid" PPT courseware, please click on the "Area of Polygons ppt Calculation of the Area of Trapezoid ppt" tag.

"Calculation of the Area of Trapezoid" Area of Polygon PPT Courseware 3:

"Calculation of the Area of a Trapezoid" Area of a Polygon PPT Courseware 3 Group Discussion: What did you discover through the above experiments? 1. Two identical trapezoids can be combined into a parallelogram. 2. The base of this parallelogram is equal to the upper and lower bases of the trapezoid..

"Calculation of the Area of Trapezoid" Area of Polygon PPT Courseware 2:

"Calculation of the Area of a Trapezoid" Area of a Polygon PPT Courseware 2 Two identical acute-angled triangles can be combined into a parallelogram because: the area of a parallelogram S=ah So: the area of a triangle S=ah2 Look at the picture and think about questions 1. You Can I use it...

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Update Time: 2024-11-18

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"Calculation of Area of Trapezoid" Area of Polygon PPT Courseware