Question

Two angles of a triangle are ${50}^{\circ }$ and ${70}^{\circ }$. The third angle is:

• A. 50^o
• B. 70^o
• C. 60^o
• D. 120^o

Answer 1

The correct option is C

60^o

According to angle sum property,
The sum of all the angles of a triangle is ${180}^{\circ }$.

Therefore, third angle = 180 - (50 + 70)
= 180 - 120 = ${60}^{\circ }$