Western Normal University Edition First Grade Mathematics Volume 1
People's Education Press First Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 1
People's Education Press Third Grade Mathematics Volume 1
People's Education Press Second Grade Mathematics Volume 1
Beijing Normal University Edition Fifth Grade Mathematics Volume 1
Hebei Education Edition Third Grade Mathematics Volume 1
Hebei Education Edition Seventh Grade Mathematics Volume 2
Beijing Normal University Edition Seventh Grade Mathematics Volume 2
Qingdao Edition Seventh Grade Mathematics Volume 1
People's Education High School Mathematics Edition B Compulsory Course 2
Qingdao Edition Second Grade Mathematics Volume 2
Qingdao Edition Seventh Grade Mathematics Volume 2
Jiangsu Education Edition Fourth Grade Mathematics Volume 1
People's Education Press First Grade Mathematics Volume 2
Beijing Normal University Edition Fifth Grade Mathematics Volume 2
!["Does it have to be a right triangle?" PPT teaching courseware on the Pythagorean Theorem](https://font2020.oss-cn-beijing.aliyuncs.com/ppt1/c5f6224a694861f22daecfa4a82dfd45.jpg)
Category | Format | Size |
---|---|---|
Beijing Normal University Edition Eighth Grade Mathematics Volume 1 | pptx | 6 MB |
Description
"Does it have to be a right triangle?" PPT teaching courseware on the Pythagorean Theorem
Part One Content: Basic Knowledge Key Points
Knowledge point 1: Determination of right triangle
1. As shown in the picture, Xiao Ming’s home has just laid square floor tiles. He connected the three vertices A, B, and C to form a triangle. Then this triangle is (A)
A. Right triangle B. Acute triangle
C. Obtuse triangle D. None of the above
2. If the lengths of the three sides of a triangle are a, b, and c respectively, and satisfy the relationship a2+b2=c2, then the triangle is a right-angled triangle.
3. It is known that the lengths of the three sides of a triangle are 12, 16, and 20 respectively, then the area of this triangle is 96.
4. (Textbook Motif Variation) As shown in the figure, AD⊥BC, the vertical foot is D. It is known that CD=1, AD=2, BD=4,
(1) Find the lengths of AC and AB.
(2) Is △ABC a right triangle? Prove your conclusion.
Knowledge point 2: Pythagorean number
5. Among the following sets of data, which one belongs to Pythagorean number (D)
A.2,3,4 B.4,5,6
C.7,8,9 D.5,12,13
6. There are six wooden sticks with the same thickness. Their lengths are 2, 4, 6, 8, 10, 12 (unit: cm). The lengths of the three wooden sticks connected end to end to form a right triangle are (C)
A.2,4,6 B.4,6,8
C.6,8,10 D.8,10,12
Does it have to be a right triangle? PPT, Part 2: Improvement of Comprehensive Ability
8. △ABC that meets the following conditions is not a right triangle (D)
A.b2-c2=a2
B.a∶b∶c=3∶4∶5
C.∠C=∠A-∠B
D.∠A∠B∠C=9∠12∠15
9. (Original) Observe the following formula:
When n=2, a=2×2=4, b=22-1=3, c=22+1=5;
When n=3, a=2×3=6, b=32-1=8, c=32+1=10;
When n=4, a=2×4=8, b=42-1=15, c=42+1=17;
11. As shown in the figure, there are 9 grid points in the 2×2 square grid. Fixed points A and B have been taken. Pick any point C among the remaining 7 points, so that △ABC is a right triangle. Point C has 4 indivual.
Does it have to be a right triangle? PPT, the third part: Expansion, exploration and breakthrough
16. In △ABC, BC=a, AC=b, AB=c, let c be the longest side. When a2+b2=c2, △ABC is a right triangle; when a2+b2≠c2, use the algebraic formula The size relationship between a2+b2 and c2 can determine the shape of △ABC (classified by angle).
(1) Please explore and judge by drawing pictures: When the three side lengths of △ABC are 6,8,9 respectively, △ABC is an acute triangle; when the three side lengths of △ABC are 6,8,11 respectively, △ ABC is an obtuse triangle.
(2) Based on the above research, Xiao Ming has the following conjecture: "When a2+b2>c2, △ABC is an acute triangle; when a2+b2 When a=3 and b=4, in what range does the longest side c take values? Is △ABC a right-angled triangle, an acute-angled triangle, or an obtuse-angled triangle? Solution: (2) Because c is the longest side, 3+4=7, So 4 ①If a2+b2>c2, that is, c2<25,0 So when 4 ②If a2+b2=c2, that is, c2=25, c=5, So when c=5, this triangle is a right triangle; ③If a2+b2 So when 5 Keywords: Free download of Beijing Normal University edition eighth-grade mathematics PPT courseware for the first volume, must it be a right triangle? PPT download, Pythagorean Theorem PPT download, .PPT format; For more information about the PPT courseware "Is the Pythagorean Theorem a right-angled triangle?", please click on the PPT tag of "Is the Pythagorean Theorem a right-angled triangle?" PPT courseware. "Does it have to be a right triangle?" Pythagorean Theorem PPT download: "Does it have to be a right triangle?" PPT download of the Pythagorean Theorem Part One: Learning Objectives 1. Understand the conditions for determining a right triangle. (Key points) 2. Be able to use Pythagorean to solve simple practical problems. (Difficulty) ... ... ... it must be a right triangle.. "Is it a right triangle?" Pythagorean Theorem PPT: "Is it Must Be a Right Triangle?" Pythagorean Theorem PPT Part One Content: Review Review: 1. After school, Xiaohong and Xiaoying broke up from school and went home along the southeast and southwest directions respectively. If Xiaohong and Xiaoying were walking The speed is 40 meters/minute, Xiaohong uses 15 minutes..
File Info
Update Time: 2024-09-04
This template belongs to Mathematics courseware Beijing Normal University Edition Eighth Grade Mathematics Volume 1 industry PPT template
"Does it have to be a right triangle?" PPT teaching courseware on the Pythagorean Theorem Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
Tips: If you open the template and feel that it is not suitable for all your needs, you can search for related content "Does it have to be a right triangle?" PPT teaching courseware on the Pythagorean Theorem is enough.
How to use the Windows system template
Directly decompress the file and use it with office or wps
How to use the Mac system template
Directly decompress the file and use it Office or wps can be used
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view: Click to see
How to create a high-quality technological sense PPT? 4 ways to share the bottom of the box
Notice
Do not download in WeChat, Zhihu, QQ, built-in browsers, please use mobile browsers to download! If you are a mobile phone user, please download it on your computer!
1. The manuscript PPT is only for study and reference, please delete it 24 hours after downloading.
2. If the resource involves your legitimate rights and interests, delete it immediately.
3. Contact information: service@daogebangong.com
"Does it have to be a right triangle?" PPT teaching courseware on the Pythagorean Theorem, due to usage restrictions, it is only for personal study and reference use. For commercial use, please go to the relevant official website for authorization.
(Personal non-commercial use refers to the use of this font to complete the display of personal works, including but not limited to the design of personal papers, resumes, etc.)
Preview
![《一定是直角三角形吗》勾股定理PPT教学课件(1)](https://font2020.oss-cn-beijing.aliyuncs.com/ppt1/c5f6224a694861f22daecfa4a82dfd45.jpg)
![《一定是直角三角形吗》勾股定理PPT教学课件(2)](https://font2020.oss-cn-beijing.aliyuncs.com/ppt1/bedde4013f5621366e9b2fd58f60a282.jpg)
![《一定是直角三角形吗》勾股定理PPT教学课件(3)](https://font2020.oss-cn-beijing.aliyuncs.com/ppt1/bacbd1e002ced4e16764f76c37ce7fac.jpg)