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.
Talc is inert in most chemical reagents. Uses for talc. Talc has many uses. The most commonly known application would be in cosmetics and dusting, body and baby powders, where the oleophilic (oil-loving, hydrophobic) nature of the mineral helps to absorb natural oils, and the slippery nature presents a pleasant feel.