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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.
Constructing Triangles: Use Sketchpad's Tools. A triangle with two congruent sides is called isosceles and one with three congruent sides is called equilateral. In this tutorial, youâll use Sketchpadâs tools to construct a triangle, an isosceles triangle, and an equilateral triangle.onstruct a Triangle. You can construct a triangle with Sketchpad by simply drawing three connected segments. Unlike a triangle that you draw on paper, a Sketchpad triangle is âdynamicââit can moveâand can become any triangle at all, just by dragging its vertices to change its size and shape. 1.