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

Description

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

Operational and inquiry requirements:

(1) If you put two identical triangles together, what shape can you create?

(2) Can you calculate the area of ​​the spelled out figure?

(3) What is the connection between the spelled out figure and the original triangle?

It can be seen from the above experiments:

Two identical triangles can be combined to form a ___________.

The base of this parallelogram is equal to ___________.

The height of this parallelogram is equal to___________.

The area of ​​each triangle is equal to ___________ of the area of ​​the parallelogram.

According to the conditions, find the area of ​​the triangle. (oral answer)

(1) Bottom 10 cm, height 6 cm.

(2) The height is 5 meters and the bottom is 24 meters.

(3) Bottom 25 cm, height 4 cm.

(4) Height 125 cm, bottom 8 cm.

(5) The bottom is 0.8 meters and the height is 11 decimeters.

Solve the problem

1. Tomatoes are grown on a triangular piece of land. Its base is 28 meters long and its height is 20 meters. If 8 kilograms of tomatoes can be harvested per square meter, how many kilograms of tomatoes can be harvested on this land?

2. Plant saplings in a triangle with a base of 20 meters and a height of 12 meters. If each tree occupies 2 square meters, how many saplings can be planted in total?

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For more information about the PPT courseware "Calculating the Area of ​​a Polygon and the Area of ​​a Triangle", please click the Calculation of the Area of ​​a Polygon ppt and the Area of ​​a Triangle ppt tag.

"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...

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

"The Area of ​​a Triangle" Calculation of the Area of ​​Polygons PPT Courseware Group Cooperation Tips Board 1. Do it: Find a way to convert triangles into the shapes you have learned. 2. Find out: What is the relationship between the transformed shape and the original triangle? 3. Think about it: the area of ​​a triangle..

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Update Time: 2024-10-05

This template belongs to Mathematics courseware Western Normal University Edition Fifth Grade Mathematics Volume 1 industry PPT template

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