# Maths

##### Across
1. 2. a line that passes through two lines in the same plane at two distinct points in the geometry
2. 6. instrument used for meaning angles with a rotating telescope
3. 9. when 2 figures are in equal shape and size
4. 10. U-shaped curve that is drawn for a quadratic function
5. 11. if the lines are parallel
6. 12. any angle greater than 90°
7. 14. an alphabet or term that represents an unknown number or unknown value or unknown quantity
8. 15. a resultant number when one number is divided by the other number
9. 17. a number or quantity placed with a variable
10. 19. those angles that sum up to 180 degrees
##### Down
1. 1. father of mathematics
2. 3. invented zero
3. 4. When the sum of two angles is equal to 90 degrees
4. 5. when 2 figures shape is same, but size is proportional
5. 7. if the lines intersect at a point
6. 8. longest side in a right-angled triangle
7. 9. A constant is a value or number that never changes in expression
8. 13. An angle which is measuring less than 90 degrees
9. 16. A line that touches the circle at a single point
10. 18. triangle that has at least two sides of equal length