Free triangular number clipart & printables for teachers
10 free printable triangular number clipart, diagrams and worksheet images for the classroom — labelled, free under CC BY-NC 4.0.
Triangular Number — T(10) = 55
Triangular Number — T(1) = 1
Triangular Number — T(2) = 3
Triangular Number — T(3) = 6
Triangular Number — T(4) = 10
Triangular Number — T(5) = 15
Triangular Number — T(6) = 21
Triangular Number — T(7) = 28
Triangular Number — T(8) = 36
Triangular Number — T(9) = 45
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