DSERT - 7 - Maths :: Properties of Triangles

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Go To: DSERT-Mathematics-Grade 7

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[Contributor - Prasanna Oruganti]


Dear Volunteer,

Please find below the detailed lesson plan and PPT for this chapter in the language mentioned against the respective link. While the lesson plan will give an overall flow of the lesson, the PPT will include lesson flow as well as the presentations for the class.


https://drive.google.com/open?id=1hA1aEB3fE1RrxivVwsWyVs5fb02pcMSJ (Lesson Plan - English)


https://drive.google.com/open?id=1QEQ5ZStt07IHHgP1IZPedkcozglSYShS (PPT - English)


You may use the content as it is or download and modify them to suit the students requirements.


If you feel any major modifications or additions are carried out by you in the form of adding any new activity, presentations, videos etc. we request you to send the modified version to submitcontent@evidyloka.org for enabling upload the modified version.


The worksheets of the lesson can be accessed from the worksheet tab.


Kindly rate the lesson plan and share your suggestions and comments on the lesson plan in the comments box below. Your valuble suggestions and comments will help us to improve the content.



[Author - Kripa S]


https://www.youtube.com/watch?v=7wDDgksd6Rw (Angle properties in Triangle)

https://www.youtube.com/watch?v=1k0G-Y41jRA (Types of triangles - English)



[Contributor - Prasanna Oruganti]

Lesson Plan version 1.1 videos

https://www.youtube.com/watch?v=NVuMULQjb3o (Polygons and triangle)

https://www.youtube.com/watch?v=NVuMULQjb3o (Triangles based on sides and angles)

https://www.youtube.com/watch?v=vw-rOqDBAvs (Angle sum property)

https://www.youtube.com/watch?v=wPyitKw_O00 (Exterior angle property)

https://www.youtube.com/watch?v=EZ6dOlRQDBo (Relation between exterior and interior angles)

https://www.youtube.com/watch?v=RGh8n86EE48 (Pythagorean theorem)

https://www.youtube.com/watch?v=1tuxsOIcUws (Pythagorean theorem with different shapes)


[Author - Kripa S]


1. Can a median of a side of triangle be out of the triangle ? Try and see.

2. Draw one equilateral triangle, one isosceles triangle, one scalene triangle. Find their altitudes and means. What is common about them?


[Contributor - Prasanna Oruganti]

Lesson Plan version 1.1 activities

1. Let children do the activity for Pythagoras theorem.

https://www.youtube.com/watch?v=dxyti_wCWaE


[Contributor - paul D'silva]

https://drive.google.com/open?id=11EmGZxVEjwk3gri0Ye7-TxaM8Be_PhKU ( Answer Key)

[Contributor - Prasanna Oruganti]

Lesson Plan version 1.1 PPT

https://drive.google.com/open?id=1QEQ5ZStt07IHHgP1IZPedkcozglSYShS


[Contributor - Abhay Karjol]

Term Transliterated Term Translated Term
Sum of interior angles of a triangle ಸಂ ಆಫ್ ಇಂಟೀರಿಯರ್ ಆಂಗಲ್ಸ್ ಆಫ್ ಎ ಟ್ರಯಾಂಗಲ್ ತ್ರಿಭುಜದ ಒಳಕೋನಗಳ ಮೊತ್ತ
Properties of parallel lines ಪ್ರಾಪರ್ಟೀಸ್ ಆಫ್ ಪ್ಯಾರಲಲ್ ಲೈನ್ಸ್ ಸಮಾಂತರ ರೇಖೆಗಳ ಗುಣಲಕ್ಷಣಗಳು
Logical proof ಲಾಜಿಕಲ್ ಪ್ರೂಫ್ ತಾರ್ಕಿಕ ಸಾಧನೆ
Activity based proof ಆಕ್ಟಿವಿಟಿ ಬೇಸ್ಡ್ ಪ್ರೂಫ್ ಪ್ರಾಯೋಗಿಕ ದೃಢೀಕರಣ
Interior opposite angles ಇಂಟೀರಿಯರ್ ಆಪೊಸಿಟ್ ಆಂಗಲ್ಸ್ ಅಂತರಾಭಿಮುಖ ಕೋನಗಳು
Theorem ಥಿಯರಮ್ ಪ್ರಮೇಯ
Exterior angle of the triangle ಎಕ್ಸ್ಟರಿಯರ್ ಆಂಗಲ್ ಆಫ್ ದ ಟ್ರಯಾಂಗಲ್ ತ್ರಿಭುಜದ ಬಾಹ್ಯಕೋನ (ಹೊರಕೋನ)
Adjacent interior angle ಅಡ್ಜಸೆಂಟ್ ಇಂಟೀರಿಯರ್ ಆಂಗಲ್ ಪಾರ್ಶ್ವ ಅಂತರ್ ಕೋನ
Pythagoras Theorem (Bodhayana Sutra) ಪೈಥಾಗೊರಸ್ ಥಿಯರಮ್ (ಬೋಧಾಯನ ಸೂತ್ರ) ಪೈಥಾಗೊರಸ್ ನ ಪ್ರಮೇಯ (ಬೋಧಾಯನ ಸೂತ್ರ)
Hypotenuse ಹೈಪೊಟೆನಸ್ ವಿಕರ್ಣ
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