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CBSE class 9 Mathematics Chapter 11 Constructions notes in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides Constructions class 9 Notes latest chapter wise notes for quick preparation of CBSE board exams and school based annual examinations. Class 9 Mathematics notes on Chapter 11 Constructions are also available for download in CBSE Guide website.
CBSE Guide Constructions class 9 Notes
CBSE guide notes are the comprehensive notes which covers the latest syllabus of CBSE and NCERT. It includes all the topics given in NCERT class 9 Mathematics text book. Users can download CBSE guide quick revision notes from myCBSEguide mobile app and my CBSE guide website.
9 Mathematics notes Chapter 11 Constructions
Download CBSE class 9th revision notes for Chapter 11 Constructions in PDF format for free. Download revision notes for Constructions class 9 Notes and score high in exams. These are the Constructions class 9 Notes prepared by team of expert teachers. The revision notes help you revise the whole chapter in minutes. Revising notes in exam days is on of the best tips recommended by teachers during exam days.
CBSE Class 09 Mathematics
- Basic Constructions
- Some Constructions of Triangles
- Use only ruler and compass while drawing constructions.
- Protractor may be used for drawing non-standard angles.
- Construction of bisector of a Line segment using compass – Draw a line segment. With both the points of the line segment as centre and taking the radisu of more than half of the measure of line segment, draw the arcs on both sides, which cuts at two points on opposite sides. Join these two points. This line is the required bisector.
- Construction of the bisector of a given angle – For bisecting an angle means drwing a ray in the interior of the angle, with its initial point at the vertex of the angle such that it divides the anlge into two equal parts.
- Construction of some standard angles such as 60o, 30o, 90o, 45o, 120o, etc.
- Constructions of a triangle is possible if its base, a base angle and the difference of the other two sides are given.
- Construction of a triangle when its base, sum of the other two sides and one base angle are given.
- Constructions of a triangle is possible if its perimeter and two base angles are given.
Constructions class 9 Notes
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CBSE Class-9 Revision Notes and Key Points
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