Question

दिखाए की तिरभुज के तिनो कोणो का योगफल 180० होता है

Answer 1

Let a n equilateral triangle with sides AB, BC and CA .so, AB =BC=CA.
angle c =angle a= angle b (angles opposite to equal sides are equal)
Let angle c= angle a= angle b be x
Angle a+ angle b+ angle c= 180( angle sum property)
x+x+x=180
3x=180
x=180/3
x= 60
Therefore, angle a ,angle b and angle c=60