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How to Construct Pascal's Triangle. In Pascal's Triangle, the top row is 1, with the second row just below it containing 1 and 1. To construct each subsequent row, add each pair of numbers, moving from left to right so that each number on a row is the sum of the two numbers just above it, to the right and the left.Put a 1 on both ends of each row.o construct each subsequent row, add each pair of numbers, moving from left to right so that each number on a row is the sum of the two numbers just above it, to the right and the left. Put a 1 on both ends of each row.
Given any triangle, it is always possible to find a circle inside the triangle such that the circle is tangent to each of the three sides of the triangle. This is the so called inscribed circle. Use one of the points shown above as the midpoint of the circle. This point is called the incenter of the triangle.