Question

If Rahul constructed an isosceles $\Delta$ ABC with a ${30}^{\circ }$ vertex angle at B then :

• A. AB = BC
  
• B. AC = AB
• C. AC = AB = BC

Answer 1

The correct option is A AB = BC

In an isosceles triangle, the two equal sides are called legs, and the remaining side is called the base. The angle opposite the base is called the vertex angle, and the point associated with that angle is called the apex.

Since the vertex angle is at B, the base of the triangle will be AC and the legs of the triangle will be AB = BC