Across
- 1. It is an irrational number, approximately equal to 3.14159. The number appears in many formulas across mathematics and physics. What number is it?
- 5. What is it called when in geometry a triangle has two sides of equal length?
- 7. What is the term for natural numbers that cannot be evenly divided by any other natural number except one and itself?
- 9. What is the opposite of addition?
Down
- 1. The theorem can be written as an equation relating the lengths of the sides a, b and the hypotenuse c. But it only applies to the right triangle. After which Greek philosopher the theorem was named?
- 2. What is the term for a number that is the result of dividing one quantity by another?
- 3. What electronic device is used to perform calculations, ranging from basic arithmetic to complex mathematics?
- 4. What polygon has five sides?
- 6. What is a straight line with a 180-degree angle also known as?
- 8. What is it called when something is boundless, endless, or larger than any natural number? It is often denoted by the symbol ∞.