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.
Anyone with children is familiar with talcum powderâthat loose, white powder used to prevent diaper rash. But talc itself isn't just white. It can also be black, blue, brown, grey, pink, silver and violet. It all depends upon the talc's chemical composition, and what proportions of such elements as aluminum, iron, manganese and titanium may also be present.