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Mathematics, 23.08.2019 04:30 tbenjamin1299

Atriangle number is any number of stones that can be arranged into a triangle. the
first three triangle numbers are 1, 3, and 6, as shown here:
1. draw arrangements of dots that represent the fourth, fifth, and sixth triangle numbers:

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Atriangle number is any number of stones that can be arranged into a triangle. the
first three...
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