Question

Sum of interior angles of a triangle is ___.

• A. 90${}^{\circ }$
• B. 180${}^{\circ }$
• C. 360${}^{\circ }$
• D. 135${}^{\circ }$

Answer 1

The correct option is B

180${}^{\circ }$

The angle sum property of a triangle states that the sum of the interior angles of a triangle is 180${}^{\circ }$.


So, in this triangle,
$\angle 1+\angle 2+\angle 3={180}^o.$