Across
- 2. A quadrilateral with one pair of parallel sides.
- 3. A closed plane figure with more than three sides.
- 4. A method of finding the area of a complex figure by dividing it into triangles.
- 5. A measure of the boundary of a figure that cannot represent its area.
Down
- 1. A four-sided figure with both pairs of opposite sides parallel.
- 6. The quadrilateral whose area is half the product of its diagonals.
- 7. The area of this shape is given by 1/2 × base × height.