Question

Find the perimeter of an isosceles triangle ABC. Side AB=4, and the base BC=3. Angles B & C are both 70 degrees.

Answer 1

11 units

Explanation:

Since ∆ABC is isosceles, it means that at least two sides are congruent/equal in length.

Sides CA and AB are congruent, since BC is the base. So, CA = 4.

That means the perimeter is 4 + 4 + 3 = 11 un