| Category | Format | Size |
|---|---|---|
| Jiangsu Education Edition Fifth Grade Mathematics Volume 1 | pptx | 6 MB |
"Calculation of Area of Trapezoid" Area of Polygon PPT Courseware 3
Description
"Calculation of Area of Trapezoid" Area of 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 sum of the upper and lower bases of the trapezoid.
3. The height of this parallelogram is equal to the height of the trapezoid.
4. The area of each trapezoid is half of the area of the parallelogram.
So the following conclusions can be drawn:
Area of trapezoid = (upper base + lower base) × height ÷ 2
practise
Two identical trapezoids can be combined into one ( ),
The base of this parallelogram is equal to ( ), and the height of this parallelogram is equal to ( ). The area of each trapezoid is equal to the area of the parallelogram ( ). Since the area of a parallelogram is equal to ( ), the area of a trapezoid is equal to ( ).
judge
1. The area of a parallelogram is twice the area of a trapezoid. ( )
2. Two trapezoids with equal areas can be combined to form a parallelogram ( )
3. The area of a trapezoid can also be expressed as (upper base + lower base) ÷ 2 × height ( )
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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 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...
"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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