| Category | Format | Size |
|---|---|---|
| Jiangsu Education Edition Fifth Grade Mathematics Volume 1 | pptx | 6 MB |
"Calculation of Area of Trapezoid" Area of Polygon PPT Courseware 2
Description
"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: 2024-07-22
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