"Area of ​​Triangles" Area of ​​Polygons PPT Courseware 2

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"Area of ​​Triangles" Area of ​​Polygons PPT Courseware 2

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Area of ​​rectangle = length × width

Area of ​​a square = side length × side length

Area of ​​flat quadrilateral = base × height

If two triangles put together form a rectangle, then the area of ​​the triangle is one square of the rectangle.

From the picture we can see that AD is the width of the rectangle and the height of the triangle ACD, the width of the rectangle = the height of the triangle; DC is the length of the rectangle and the base of the triangle, the length of the rectangle = the base of the triangle.

If two triangles form a parallelogram, then the area of ​​the triangle is half the area of ​​the parallelogram.

We can see from the figure that the height is both the height of the parallelogram and the height of the triangle, and the base is both the base of the parallelogram and the base of the triangle.

because,

Area of ​​parallelogram = base × height

so,

Area of ​​triangle = area of ​​parallelogram ÷2 = base × height ÷2

in conclusion

If S represents the area of ​​the triangle, and a and h represent the base and height of the triangle respectively, then the calculation formula for the area of ​​the triangle can be written as:

This courseware provides a comprehensive introduction to the area of ​​triangles through small games and exercises, which improves students' interest in learning and helps students better understand and remember the knowledge points of the area of ​​polygons. It is a good classroom teaching courseware.

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For more information about the "Area of ​​Polygons and Areas of Triangles" PPT courseware, please click the Area of ​​Polygons ppt Area of ​​Triangles ppt tag.

"The Area of ​​a Triangle" Calculation of the Area of ​​a Polygon PPT Courseware 4:

"The Area of ​​a Triangle" Calculation of the Area of ​​a Polygon PPT Courseware 4 Operation and exploration requirements: (1) What figure can be created by putting two identical triangles together? (2) Can you calculate the area of ​​the spelled out figure? (3) The spelled out figure is the same as the original triangle..

"The Area of ​​a Triangle" Calculation of the Area of ​​a Polygon PPT Courseware 3:

"Area of ​​Triangles" Calculation of the Area of ​​Polygons PPT Courseware 3 Are the areas of the following three triangles equal? Why? The area of ​​the red triangle: 642=12 (square centimeters) The area of ​​the black triangle: 642=12 (square centimeters) The area of ​​the green triangle:..

"The Area of ​​a Triangle" Calculation of the Area of ​​a Polygon PPT Courseware 2:

"Area of ​​Triangles" Calculation of the Area of ​​Polygons PPT Courseware 2 Review Import (1) What is the formula for calculating the area of ​​a triangle? How is it derived? The formula for the area of ​​a triangle: S=ah2 (2) Who can tell me the formula for the area of ​​a triangle and the formula for a parallelogram...

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Update Time: 2024-11-07

This template belongs to Mathematics courseware People's Education Press Fifth Grade Mathematics Volume 1 industry PPT template

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