An isosceles triangle is a triangle with two congruent sides and congruent base angles. congruent means equal. No matter which direction the triangle's apex, or peak, points, it's an isosceles triangle if two of its sides are congruent.
Uses of talc: Talc is used in a wide variety of products that we see every day. It is an important ingredient in rubber, a filler and whitener in paint, a filler and brightening agent in high-quality papers, and a primary ingredient in many types of cosmetics.
Direct application of talcum powder to the lungs does not cause cancer. Talc is used in a medical technique called pleurodesis that can help relieve symptoms of some lung problems. Doctors apply sterile talc directly to the lining of the lungs in this technique. And there is no evidence that this direct application of talc to the body causes cancer.