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.
Talcum Powder. Mothers, nurses and nannies use silky white talcum powder to treat diaper rash, to absorb moisture and as a deodorant. The mineral talc, from which talcum powder is developed, is a component of popular cosmetic and personal hygiene products used by many on a daily basis.