Example 2 - Chapter 5 Class 9 Introduction to Euclid's Geometry (Deleted)
Last updated at Aug. 23, 2021 by Teachoo
Last updated at Aug. 23, 2021 by Teachoo
Transcript
Example 2 Prove that an equilateral triangle can be constructed on any given line segment. Equilateral triangle is a triangle with all sides equal. We prove this by geometry. 1. Draw a line segment AB of any length. 2. Take compass, put the pointy end at point A & pencil at point B. 3. Draw an arc. Here we draw an arc of radii AB. 4. Now put the pointy end at B & pencil at A. 5. Draw another arc. Here we draw an arc of radii BA. 6. Mark the intersecting point as C. 7. Join point A to point C by a straight line. 8. Join point B to point C by a straight line. We need to prove AB = AC = BC Now AC = AB (Radii of same circle) & BC = AB (Radii of same circle) From Euclid’s axiom, things which are equal to the same thing are equal. So, AC = BC. So, we get AB = AC = BC , ∴ ∆ABC is an equilateral triangle.
Axioms
Euclid’s Definitions
What is difference between Axioms, Postulates and Theorems?
What is Euclid’s Geometry
Euclid’s axioms
Example 1 Deleted for CBSE Board 2022 Exams
Ex 5.1, 4 Important Deleted for CBSE Board 2022 Exams
Ex 5.1, 6 Deleted for CBSE Board 2022 Exams
Ex 5.1, 5 Deleted for CBSE Board 2022 Exams
Example 2 Important Deleted for CBSE Board 2022 Exams You are here
Axioms
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