Math

3. A three-dimensional figure with 6 faces, 8 vertices and 12 edges.
4. A number without fractional or decimal parts.
7. A quadrilateral with one pair of adjacent sides equal and the other pair unequal.
9. A quadrilateral with only one pair of parallel sides.
11. A four-sided polygon with opposite sides parallel and equal in length.
12. The longest side of a right-angled triangle.
13. The total area of all the surfaces of a 3-dimensional object.
15. A quadrilateral with opposite sides equal and all angles right angles.

1. The amount of space occupied by a 3-dimensional object.
2. A number that cannot be expressed as a fraction of two integers.
5. The set of numbers including all positive and negative integers, zero, and fractions.
6. A solid figure with two parallel circular bases connected by a curved surface.
8. The distance around a circle.
10. A three-dimensional object with a circular base and a single vertex.
14. A quadrilateral with all sides equal and opposite angles equal.