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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.
To Prove that a Figure is an Isosceles Triangle. ï«Prove that the triangle has two congruent sides using the distance formula. Ex. 1 Triangle QRS has vertices Q (-3, -3), R (0, 5), and S (3, -3). Prove using coordinate geometry. that QRS is an isosceles triangle. Step 1: Plot and label the triangle on the grid.