maths

1. graph that uses bars that equal ranges of values
2. a greek alphabet
8. if two lines intersect at a right angle
9. considered as the father of geometry
11. the ratio of the opposite side to the adjacent side of a triangle
12. part of the quadratic formula underneath the square root symbol: b²-4ac
13. A line that passes through the center of a circle and divides it in half

1. longest side in a right angle triangle
3. the type of mathematics that deals with the relationship between the sides and angles of triangles
4. the reciprocal of sine
5. adding all numbers together and then dividing the sum of the numbers by the number of numbers
6. a type of mathematics in which letters and symbols are used to represent numbers
7. also known as the x-coordinate
8. an expression of more than two algebraic terms
10. having exactly the same size and shape