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.
Artistic soapstone has high talc content, is very soft, and is used for carving and welders pencils. The fat little Inuit whales and polar bears common in gift shops are carved from soapstone. Architectural soapstone is between 60 and 75% talc and is used for sinks, countertops, floors and other architectural elements. This is the soapstone used by Vermont Soapstone.