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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.
The formula for finding the area of a triangle is called Heron's formula and is the following: Area = â{s (s-a)(s-b)(s-c)} . Remember from the previous step that s is the semi-perimeter and a, b, and c are the triangleâs three sides.. Write down the formula for finding the area of the triangle. The formula for finding the area of a triangle with two known sides and a known included angle is the following: Area = 1/2(b)(c) x sinA. In this equation, b and c represent the lengths of the sides and A represents the angle.