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CHAPTER 2 : TRIANGLES

2.1 Introduction

As the name triangle suggests, this geometric shape is made of three angles. It has three sides and is represented by the symbol D and is named by its vertices as shown in figure 2.1.

Figure 2.1

D ABC has three sides AB, BC and CA. It has three angles
Ð ABC, Ð BCA and ÐCAB.

Index

2.1 Introduction
2.2 Sum Of The Angles Of A Triangle
2.3 Types of Triangles
2.4 Altitude, Median And Angle Bisector
2.5 Congruence Of Triangles
2.6 Sides Opposite Congruent Angles

Chapter 3

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