Create a dot pattern representation of the trapezoidal numbe

Create a dot pattern representation of the trapezoidal numbers, Select the correct answer below. Notice that 1 + 1 + = 1 times 3, 1 + 2 + 2 + 2 + 1 = 2 times 4. And 1 + 2 + 3 + 3 + 3 + 2 + 1 = 3 times 5. Show how the dots in a representation of a trapezoidal number can be rearranged into a rectangle with two more columns than rows.

Solution

#1) Option (C) is correct

#2) Option (A) is correct since here only no of columns is 2 more than no. of rows.