Across
- 1. Able to be represented by a straight line on a graph
- 4. a part of a figure cut off by a line or plane intersecting it.
- 5. the amount of space that a substance or object occupies
- 9. corresponding angles and sides must be equal.
- 10. The total area that the surface of the object occupies.
- 12. removing one variable by adding equations
- 15. the value obtained by dividing the sum of several quantities by their number; an average
- 16. either of two angles whose sum is 90°.
- 18. either of two angles whose sum is 180°.
- 20. the distance from a point to the y -axis, measured parallel to the x -axis.
- 22. the value that occurs most frequently in a given set of data.
- 24. each of a group of numbers used to indicate the position of a point, line, or plane.
- 25. a value or quantity lying at the midpoint of a frequency distribution
- 26. a numerical or constant quantity placed before and multiplying the variable in an algebraic expression.
- 27. a closed plane figure having three sides and three angles.
Down
- 2. an equality relating one mathematical expression A to another mathematical expression B, such that A and B produce the same value for all values of the variables within a certain range of validity.
- 3. putting numbers where the letters are
- 6. the relations of the sides and angles of triangles and the relevant functions of any angles.
- 7. an expression consisting of variables and coefficients.
- 8. a formula with 'n' in it which enables you to find any term of a sequence without having to go up from one term to the next.
- 11. the portion of a solid that lies between one or two parallel planes cutting it.
- 13. an equation containing a single variable of degree 2.
- 14. Straight line or plane that touches a curve or curved surface at a point
- 17. a flat surface on which a straight line joining any two points on it would wholly lie.
- 19. The square of the length of the hypotenuse of a right triangle equals the sum of the squares of the lengths of the other two sides.
- 21. the plane figure enclosed by two radii of a circle
- 23. the boundary of a closed geometrical figure.
- 28. A subsidiary or intermediate theorem in an argument or proof.