"Calculation of Area of ​​Trapezoid" Area of ​​Polygon PPT Courseware 2

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"Calculation of Area of ​​Trapezoid" Area of ​​Polygon PPT Courseware 2

Two identical acute-angled triangles can form a parallelogram

Because: the area of ​​the parallelogram S=ah

Therefore: the area of ​​a triangle S=ah÷2

Look at pictures and think about problems

1. Can you use the skills you have learned to find a way to find the area of ​​a trapezoid?

2. If you can’t think of a way by looking at the picture, can you think of a way to find the area of ​​a trapezoid by using the learning tools in your hand?

Area of ​​trapezoid = (upper base + lower base) × height ÷ 2

True or False

1. The area of ​​the trapezoid is S=(a+b)h. ( )

2. The area of ​​a trapezoid is half of the area of ​​a parallelogram. ( )

3. If the heights of two trapezoids are equal, their areas are equal. ( )

4. It is known that the average value of the upper and lower bases of a trapezoid is d meters, the height is h meters, and its area is "dh square meters" ( )

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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 Area of ​​Trapezoid" Area of ​​Polygon PPT Courseware:

"Calculation of Area of ​​Trapezoid" Area of ​​Polygon PPT Courseware 1. What are the formulas for the areas of parallelograms and triangles? The area of ​​a parallelogram = base height S = ah The area of ​​a triangle = base height 2 S = ah2 It can be seen through experiments that two identical trapezoids can...

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Update Time: 2024-11-22

This template belongs to Mathematics courseware Jiangsu Education Edition Fifth Grade Mathematics Volume 1 industry PPT template

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