If all sides of a triangle are equal, sum of any two angles of the triangle is:

• A. \[{{60}^{{}^\circ }}\]                        
• B. \[{{100}^{{}^\circ }}\]         
• C. \[{{110}^{{}^\circ }}\]                       
• D. \[{{120}^{{}^\circ }}\]
• E. None of these