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99%
Pi (π) is approximately equal to 3.14159.
Tier 2: Mathematical Derivation
99%
The square root of 2 is an irrational number.
Tier 2: Mathematical Derivation
99%
A triangle's interior angles sum to 180 degrees in Euclidean geometry.
Tier 2: Mathematical Derivation
99%
The Pythagorean theorem states a² + b² = c² for right triangles.
Tier 2: Mathematical Derivation
99%
Zero is neither positive nor negative.
Tier 2: Mathematical Derivation
99%
The Fibonacci sequence begins 0, 1, 1, 2, 3, 5, 8, 13, 21.
Tier 2: Mathematical Derivation
99%
e (Euler's number) is approximately 2.71828.
Tier 2: Mathematical Derivation
99%
A prime number is divisible only by 1 and itself.
Tier 4: Definition
99%
There are infinitely many prime numbers.
Tier 2: Mathematical Derivation
99%
The derivative of x² is 2x.
Tier 2: Mathematical Derivation