Across
- 2. A Indian mathematician who wrote the first work with full and systematic use of the decimal number system.
- 5. Two lines that form right angles where they intersect.
- 6. A Greek mathematician, often referred to as the "founder of geometry" or the "father of geometry".
- 7. Points are From Equal Distant to each other.
- 11. Where lines cross over at a common point.
- 12. There are ________ many rational numbers between any two rational numbers.
- 17. The combination of rational and irrational number is called _______ numbers.
- 18. An _________ is a mathematical statement that two expressions are equal.
- 19. A Number or symbol multiplied with a variable or an unknown quantity in an algebraic term.
- 20. A straight path that has a beginning but not ending.
Down
- 1. An angle that measures more than 180 degrees but less than 360 degrees.
- 3. When a figure is folded in half and the two halves match perfectly.
- 4. _______terms are terms that have the same variables and powers.
- 8. A unit used to measure an angle.
- 9. Distance of a point from y axis.
- 10. _______is the ratio of the circumference of any circle to the diameter of that circle.
- 13. All natural numbers together with zero and negatives of all natural numbers form the set of _______.
- 14. the product of (2+root3)(4+root5)is a __________ number.
- 15. All natural numbers are ________ numbers.
- 16. A letter or symbol used as a placeholder for an unknown value.