Maths

3. A quadrilateral in which one pair of opposite sides is parallel
4. The price marked on an article
6. a statement of equality which holds for all values of the variable
9. The x-coordinate is also known as_____
11. The process of writing a given algebraic expression as the product of two or more factors
12. The number of times a particular observation occurs is called its _______

1. The amount of space occupied by a solid
2. Lines ___ to same lines are parallel to each other
5. An algebraic expression, in which the exponents of variable are non-negative integer
7. A certain percentage of rebate on the MP is called
8. The diagonals of _____ bisect each other at right angle
10. A parallelogram in which adjacent sides are equal and one angle's measures 90