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28 is a triangle number. The 28th triangle number is 406.
13 is not a triangle number. The 13th triangle number is 91.
The third triangle number is 6.
The fifth triangle number, known as T5 is 15.
A triangular number or triangle number counts the objects that can form an equilateral triangle. 10 objects can be formed into an equilateral triangle.
28 is a triangle number. The 28th triangle number is 406.
13 is not a triangle number. The 13th triangle number is 91.
The third triangle number is 6.
The fifth triangle number, known as T5 is 15.
No. Triangle numbers are a fixed set of numbers that can't be altered to make one certain number turn into a triangle number.
The 8th Triangle was born.
A triangular number or triangle number counts the objects that can form an equilateral triangle. 10 objects can be formed into an equilateral triangle.
The area of a triangle can be a rational number or an irrational number depending on its dimensions.
the number of obtuse angle in a right triangle is zer0
The fewest number of right angles in a triangle is zero.
The Nth term for a triangle number is: 0.5n(n+1)
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