Construction And Properties Of Euilateral Triangle

CONTENTS • What Is A Triangle? • Definition of Triangle. • Types of Triangle. • Definition of Equilateral Triangle. • Construction of Equilateral Triangle. • Properties of Equilateral Triangle.

WHAT IS A TRIANGLE ? • TRI+ANGLE = TRIANGLE • TRI means 3 . • So triangle is a geometrical figure with 3 angles.

TRIANGLE DEFINITION :- A triangle is

a geometric figure that consists of three vertices joined to form three sides.

TYPES OF TRIANGLE

EQUILATERAL TRIANGLE

A triangle which have all three sides equal is known Equilateral triangle.

CONSTRUCTION OF EQUILATERAL TRIANGLE

1. Draw a line AB = 5 cm.

CONSTRUCTION OF EQUILATERAL TRIANGLE

2. From point B draw an arc of length=5 cm

CONSTRUCTION OF EQUILATERAL TRIANGLE C

3.From point A draw an arc of length=5 cm, cut the arc and name the point C.

EQUILATERAL TRIANGLE C

4.Then join points AC

EQUILATERAL TRIANGLE C

5.Then join points BC

PROPERTIES OF EQUILATERAL TRIANGLE 1)

In Equilateral triangle all three angles are equal. 2) In Equilateral triangle all three sides are equal. 3) In Equilateral triangle all three angles are of 60 degrees.

REFERENCES • TEXT BOOK OF CLASS 10TH ENGLISH MEDIUM (MATHS) • MICROSOFT ENCARTA ENCYLOPEDIA, GEOMETRY • INTERNET

GOVT. SR. SEC. SCHOOL,BAHADURGARH

SUBMITTED BY:CLASS 10TH • SUKHWINDER • PARDEEP • LALIT

GUIDANCE:SATPAL KAUR(CT) SHIVANI NANDA(CF) KAMALPREET KAUR(CF)